diff --git a/DD.Persistence.Database.Postgres/Extensions/SpecificationExtensions.cs b/DD.Persistence.Database.Postgres/Extensions/SpecificationExtensions.cs
deleted file mode 100644
index 2c13c10..0000000
--- a/DD.Persistence.Database.Postgres/Extensions/SpecificationExtensions.cs
+++ /dev/null
@@ -1,83 +0,0 @@
-using Ardalis.Specification;
-using DD.Persistence.Database.Specifications;
-using System.Linq.Expressions;
-
-namespace DD.Persistence.Database.Postgres.Extensions;
-
-// ToDo: рассмотреть возможность вынести логику в спецификации
-public static class SpecificationExtensions
-{
-    public static ISpecification<T> Or<T>(this ISpecification<T> spec, ISpecification<T> otherSpec)
-    {
-        var newSpec = new EmptySpecification<T>();
-
-        var parameter = Expression.Parameter(typeof(T), "x");
-
-        var exprSpec1 = CombineWhereExpressions(spec.WhereExpressions, parameter);
-        var exprSpec2 = CombineWhereExpressions(otherSpec.WhereExpressions, parameter);
-
-        Expression? orExpression = exprSpec1 is not null && exprSpec2 is not null
-            ? Expression.OrElse(exprSpec1, exprSpec2)
-            : exprSpec1 ?? exprSpec2;
-
-        if (orExpression is null) return newSpec;
-
-        var lambdaExpr = Expression.Lambda<Func<T, bool>>(orExpression, parameter);
-
-        newSpec.Query.Where(lambdaExpr);
-
-        return newSpec;
-    }
-
-    // ToDo: Рефакторинг
-    public static ISpecification<T> And<T>(this ISpecification<T> spec, ISpecification<T> otherSpec)
-    {
-        var newSpec = new EmptySpecification<T>();
-
-        var parameter = Expression.Parameter(typeof(T), "x");
-
-        var exprSpec1 = CombineWhereExpressions(spec.WhereExpressions, parameter);
-        var exprSpec2 = CombineWhereExpressions(otherSpec.WhereExpressions, parameter);
-
-        Expression? andExpression = exprSpec1 is not null && exprSpec2 is not null
-            ? Expression.AndAlso(exprSpec1, exprSpec2)
-            : exprSpec1 ?? exprSpec2;
-
-        if (andExpression is null) return newSpec;
-
-        var lambdaExpr = Expression.Lambda<Func<T, bool>>(andExpression, parameter);
-
-        newSpec.Query.Where(lambdaExpr);
-
-        return newSpec;
-    }
-
-    public static Expression? CombineWhereExpressions<T>(IEnumerable<WhereExpressionInfo<T>> whereExpressions, ParameterExpression parameter)
-    {
-        Expression? newExpr = null;
-        foreach (var where in whereExpressions)
-        {
-            var expr = ParameterReplacerVisitor.Replace(where.Filter.Body, where.Filter.Parameters[0], parameter);
-            newExpr = newExpr is null ? expr : Expression.AndAlso(newExpr, expr);
-        }
-        return newExpr;
-    }
-}
-
-public class ParameterReplacerVisitor : ExpressionVisitor
-{
-    private readonly Expression _newExpression;
-    private readonly ParameterExpression _oldParameter;
-
-    private ParameterReplacerVisitor(ParameterExpression oldParameter, Expression newExpression)
-    {
-        _oldParameter = oldParameter;
-        _newExpression = newExpression;
-    }
-
-    internal static Expression Replace(Expression expression, ParameterExpression oldParameter, Expression newExpression)
-      => new ParameterReplacerVisitor(oldParameter, newExpression).Visit(expression);
-
-    protected override Expression VisitParameter(ParameterExpression p)
-      => p == _oldParameter ? _newExpression : p;
-}
diff --git a/DD.Persistence.Database.Postgres/Helpers/FilterBuilder.cs b/DD.Persistence.Database.Postgres/Helpers/FilterBuilder.cs
deleted file mode 100644
index e8a7f57..0000000
--- a/DD.Persistence.Database.Postgres/Helpers/FilterBuilder.cs
+++ /dev/null
@@ -1,137 +0,0 @@
-using Ardalis.Specification;
-using DD.Persistence.Database.Entity;
-using DD.Persistence.Database.EntityAbstractions;
-using DD.Persistence.Database.Postgres.Extensions;
-using DD.Persistence.Database.Specifications.ValuesItem;
-using DD.Persistence.Filter.Models.Abstractions;
-using DD.Persistence.Filter.Models.Enumerations;
-using DD.Persistence.Filter.Visitors;
-using DD.Persistence.Models;
-
-namespace DD.Persistence.Database.Postgres.Helpers;
-public static class FilterBuilder
-{
-    public static ISpecification<TEntity>? BuildFilter<TEntity>(this DataScheme dataScheme, TNode root)
-        where TEntity : IValuesItem
-    {
-        var result = dataScheme.BuildSpecificationByNextNode<TEntity>(root);
-
-        return result;
-    }
-
-    private static ISpecification<TEntity>? BuildSpecificationByNextNode<TEntity>(this DataScheme dataScheme, TNode node)
-        where TEntity : IValuesItem
-    {
-        var propIndexMap = dataScheme.PropNames
-            .Select((name, index) => new { name, index })
-            .ToDictionary(x => x.name, x => x.index);
-
-        var visitor = new NodeVisitor<ISpecification<TEntity>?>(
-            v =>
-            {
-                var leftSpecification = dataScheme.BuildSpecificationByNextNode<TEntity>(v.Left);
-                var rigthSpecification = dataScheme.BuildSpecificationByNextNode<TEntity>(v.Rigth);
-                if (leftSpecification is null)
-                    return rigthSpecification;
-                if (rigthSpecification is null)
-                    return leftSpecification;
-
-                ISpecification<TEntity>? result = null;
-                switch (v.Operation)
-                {
-                    case OperationEnum.And:
-                        result = leftSpecification.And(rigthSpecification);
-                        break;
-                    case OperationEnum.Or:
-                        result = leftSpecification.Or(rigthSpecification);
-                        break;
-                }
-
-                return result;
-            },
-            t =>
-            {
-                int keyIndex;
-                if (!propIndexMap.TryGetValue(t.PropName, out keyIndex))
-                    throw new ArgumentException($"Свойство {t.PropName} не найдено в схеме данных");
-                var type = dataScheme.PropTypes[keyIndex];
-
-                ISpecification<TEntity>? result = null;
-                switch (type)
-                {
-                    case PropTypeEnum.String:
-                        var stringValue = Convert.ToString(t.Value);
-                        switch (t.Operation)
-                        {
-                            case OperationEnum.Equal:
-                                result = new ValueEqaulSpecification<TEntity>(keyIndex, stringValue);
-                                break;
-                            case OperationEnum.NotEqual:
-                                result = new ValueNotEqaulSpecification<TEntity>(keyIndex, stringValue);
-                                break;
-                        }
-                        break;
-                    case PropTypeEnum.Double:
-                        var doubleValue = Convert.ToDouble(t.Value);
-                        switch (t.Operation) 
-                        // ToDo: можно схлопнуть в один Generic - метод, где TValue : struct
-                        // Но в таком случае придётся продумать аналогичное решение на уровне спецификаций
-                        {
-                            case OperationEnum.Equal:
-                                result = new ValueEqaulSpecification<TEntity>(keyIndex, doubleValue);
-                                break;
-                            case OperationEnum.NotEqual:
-                                result = new ValueNotEqaulSpecification<TEntity>(keyIndex, doubleValue);
-                                break;
-                            case OperationEnum.Greate:
-                                result = new ValueGreateSpecification<TEntity>(keyIndex, doubleValue);
-                                break;
-                            case OperationEnum.GreateOrEqual:
-                                result = new ValueGreateOrEqualSpecification<TEntity>(keyIndex, doubleValue);
-                                break;
-                            case OperationEnum.Less:
-                                result = new ValueLessSpecification<TEntity>(keyIndex, doubleValue);
-                                break;
-                            case OperationEnum.LessOrEqual:
-                                result = new ValueLessOrEqualSpecification<TEntity>(keyIndex, doubleValue);
-                                break;
-                        }
-                        break;
-                    case PropTypeEnum.DateTime:
-                        stringValue = Convert.ToString(t.Value);
-                        DateTimeOffset? dateTimeValue = string.IsNullOrEmpty(stringValue) 
-                            ? null
-                            : DateTimeOffset.Parse(stringValue);
-                        switch (t.Operation)
-                        {
-                            case OperationEnum.Equal:
-                                result = new ValueEqaulSpecification<TEntity>(keyIndex, dateTimeValue);
-                                break;
-                            case OperationEnum.NotEqual:
-                                result = new ValueNotEqaulSpecification<TEntity>(keyIndex, dateTimeValue);
-                                break;
-                            case OperationEnum.Greate:
-                                result = new ValueGreateSpecification<TEntity>(keyIndex, dateTimeValue);
-                                break;
-                            case OperationEnum.GreateOrEqual:
-                                result = new ValueGreateOrEqualSpecification<TEntity>(keyIndex, dateTimeValue);
-                                break;
-                            case OperationEnum.Less:
-                                result = new ValueLessSpecification<TEntity>(keyIndex, dateTimeValue);
-                                break;
-                            case OperationEnum.LessOrEqual:
-                                result = new ValueLessOrEqualSpecification<TEntity>(keyIndex, dateTimeValue);
-                                break;
-                        }
-                        break;
-                }
-
-                return result;
-            }
-        );
-
-        var result = node.AcceptVisitor(visitor);
-
-        return result;
-    }
-}
diff --git a/DD.Persistence.Database/DD.Persistence.Database.csproj b/DD.Persistence.Database/DD.Persistence.Database.csproj
index 4d751e4..5a34ccc 100644
--- a/DD.Persistence.Database/DD.Persistence.Database.csproj
+++ b/DD.Persistence.Database/DD.Persistence.Database.csproj
@@ -7,6 +7,8 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Ardalis.Specification.EntityFrameworkCore" Version="8.0.0" />
+    <PackageReference Include="Mapster" Version="7.4.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="9.0.0">
       <PrivateAssets>all</PrivateAssets>
diff --git a/DD.Persistence.Database/EntityAbstractions/IValuesItem.cs b/DD.Persistence.Database/EntityAbstractions/IValuesItem.cs
index f2a801c..0f2d219 100644
--- a/DD.Persistence.Database/EntityAbstractions/IValuesItem.cs
+++ b/DD.Persistence.Database/EntityAbstractions/IValuesItem.cs
@@ -7,11 +7,6 @@ namespace DD.Persistence.Database.EntityAbstractions;
 /// </summary>
 public interface IValuesItem
 {
-    /// <summary>
-    /// Схема данных
-    /// </summary>
-    DataScheme? DataScheme { get; set; }
-
     /// <summary>
     /// Значения
     /// </summary>
diff --git a/DD.Persistence.Database/Extensions/SpecificationExtensions.cs b/DD.Persistence.Database/Extensions/SpecificationExtensions.cs
new file mode 100644
index 0000000..3bb0bc3
--- /dev/null
+++ b/DD.Persistence.Database/Extensions/SpecificationExtensions.cs
@@ -0,0 +1,38 @@
+using Ardalis.Specification;
+using DD.Persistence.Database.Helpers;
+using System.Linq.Expressions;
+
+namespace DD.Persistence.Database.Postgres.Extensions;
+
+public static class SpecificationExtensions
+{
+    public static Expression<Func<T, bool>>? Or<T>(this ISpecification<T> spec, ISpecification<T> otherSpec)
+    {
+        var parameter = Expression.Parameter(typeof(T), "x");
+
+        var exprSpec1 = CombineWhereExpressions(spec.WhereExpressions, parameter);
+        var exprSpec2 = CombineWhereExpressions(otherSpec.WhereExpressions, parameter);
+
+        Expression? orExpression = exprSpec1 is not null && exprSpec2 is not null
+            ? Expression.OrElse(exprSpec1, exprSpec2)
+            : exprSpec1 ?? exprSpec2;
+
+        if (orExpression is null) 
+            return null;
+
+        var lambdaExpr = Expression.Lambda<Func<T, bool>>(orExpression, parameter);
+
+        return lambdaExpr;
+    }
+
+    public static Expression? CombineWhereExpressions<T>(IEnumerable<WhereExpressionInfo<T>> whereExpressions, ParameterExpression parameter)
+    {
+        Expression? newExpr = null;
+        foreach (var where in whereExpressions)
+        {
+            var expr = ParameterReplacerVisitor.Replace(where.Filter.Body, where.Filter.Parameters[0], parameter);
+            newExpr = newExpr is null ? expr : Expression.AndAlso(newExpr, expr);
+        }
+        return newExpr;
+    }
+}
diff --git a/DD.Persistence.Database/Helpers/FilterBuilder.cs b/DD.Persistence.Database/Helpers/FilterBuilder.cs
new file mode 100644
index 0000000..2d90284
--- /dev/null
+++ b/DD.Persistence.Database/Helpers/FilterBuilder.cs
@@ -0,0 +1,106 @@
+using Ardalis.Specification;
+using DD.Persistence.Database.EntityAbstractions;
+using DD.Persistence.Database.Postgres.Extensions;
+using DD.Persistence.Database.Specifications;
+using DD.Persistence.Database.Specifications.ValuesItem;
+using DD.Persistence.Filter.Models;
+using DD.Persistence.Filter.Models.Abstractions;
+using DD.Persistence.Filter.Models.Enumerations;
+using DD.Persistence.Filter.Visitors;
+using DD.Persistence.Models;
+using System.Text.Json;
+
+namespace DD.Persistence.Database.Postgres.Helpers;
+public static class FilterBuilder
+{
+    public static ISpecification<TEntity>? BuildFilter<TEntity>(this DataSchemeDto dataSchemeDto, TNode root)
+        where TEntity : IValuesItem
+    {
+        var result = dataSchemeDto.BuildSpecificationByNextNode<TEntity>(root);
+
+        return result;
+    }
+
+    private static ISpecification<TEntity>? BuildSpecificationByNextNode<TEntity>(this DataSchemeDto dataSchemeDto, TNode node)
+        where TEntity : IValuesItem
+    {
+        var visitor = new NodeVisitor<ISpecification<TEntity>?>(
+            dataSchemeDto.VertexProcessing<TEntity>,
+            dataSchemeDto.LeafProcessing<TEntity>
+        );
+
+        var result = node.AcceptVisitor(visitor);
+
+        return result;
+    }
+
+    private static ISpecification<TEntity>? VertexProcessing<TEntity>(this DataSchemeDto dataSchemeDto, TVertex vertex)
+        where TEntity : IValuesItem
+    {
+        var leftSpecification = dataSchemeDto.BuildSpecificationByNextNode<TEntity>(vertex.Left);
+        var rigthSpecification = dataSchemeDto.BuildSpecificationByNextNode<TEntity>(vertex.Rigth);
+        if (leftSpecification is null)
+            return rigthSpecification;
+        if (rigthSpecification is null)
+            return leftSpecification;
+
+        ISpecification<TEntity>? result = null;
+        switch (vertex.Operation)
+        {
+            case OperationEnum.And:
+                result = new AndSpecification<TEntity>(leftSpecification, rigthSpecification);
+                break;
+            case OperationEnum.Or:
+                result = new OrSpecification<TEntity>(leftSpecification, rigthSpecification);
+                break;
+        }
+
+        return result;
+    }
+
+    private static ISpecification<TEntity>? LeafProcessing<TEntity>(this DataSchemeDto dataSchemeDto, TLeaf leaf)
+        where TEntity : IValuesItem
+    {
+        var schemeProperty = dataSchemeDto.FirstOrDefault(e => e.PropertyName.Equals(leaf.PropName));
+        if (schemeProperty is null)
+            throw new ArgumentException($"Свойство {leaf.PropName} не найдено в схеме данных");
+
+        ISpecification<TEntity>? result = null;
+        switch (schemeProperty.PropertyKind)
+        {
+            case JsonValueKind.String:
+                var stringValue = Convert.ToString(leaf.Value);
+                var stringSpecifications = StringSpecifications<TEntity>();
+                result = stringSpecifications[leaf.Operation](schemeProperty.Index, stringValue);
+                break;
+            case JsonValueKind.Number:
+                var doubleValue = Convert.ToDouble(leaf.Value);
+                var doubleSpecifications = DoubleSpecifications<TEntity>();
+                result = doubleSpecifications[leaf.Operation](schemeProperty.Index, doubleValue);
+                break;
+        }
+
+        return result;
+    }
+
+    private static Dictionary<OperationEnum, Func<int, string?, ISpecification<TEntity>>> StringSpecifications<TEntity>()
+    where TEntity : IValuesItem => new()
+    {
+            { OperationEnum.Equal, (int index, string? value) => new ValueEqaulSpecification<TEntity>(index, value) },
+            { OperationEnum.NotEqual, (int index, string? value) => new ValueNotEqualSpecification<TEntity>(index, value) },
+            { OperationEnum.Greate, (int index, string? value) => new ValueGreateSpecification<TEntity>(index, value) },
+            { OperationEnum.GreateOrEqual, (int index, string? value) => new ValueGreateOrEqualSpecification<TEntity>(index, value) },
+            { OperationEnum.Less, (int index, string? value) => new ValueLessSpecification<TEntity>(index, value) },
+            { OperationEnum.LessOrEqual, (int index, string? value) => new ValueLessOrEqualSpecification<TEntity>(index, value) }
+    };
+    private static Dictionary<OperationEnum, Func<int, double?, ISpecification<TEntity>>> DoubleSpecifications<TEntity>()
+        where TEntity : IValuesItem => new()
+        {
+            { OperationEnum.Equal, (int index, double? value) => new ValueEqaulSpecification<TEntity>(index, value) },
+            { OperationEnum.NotEqual, (int index, double? value) => new ValueNotEqualSpecification<TEntity>(index, value) },
+            { OperationEnum.Greate, (int index, double? value) => new ValueGreateSpecification<TEntity>(index, value) },
+            { OperationEnum.GreateOrEqual, (int index, double? value) => new ValueGreateOrEqualSpecification<TEntity>(index, value) },
+            { OperationEnum.Less, (int index, double? value) => new ValueLessSpecification<TEntity>(index, value) },
+            { OperationEnum.LessOrEqual, (int index, double? value) => new ValueLessOrEqualSpecification<TEntity>(index, value) }
+        };
+}
diff --git a/DD.Persistence.Database/Helpers/ParameterReplacerVisitor.cs b/DD.Persistence.Database/Helpers/ParameterReplacerVisitor.cs
new file mode 100644
index 0000000..d64ac11
--- /dev/null
+++ b/DD.Persistence.Database/Helpers/ParameterReplacerVisitor.cs
@@ -0,0 +1,20 @@
+using System.Linq.Expressions;
+
+namespace DD.Persistence.Database.Helpers;
+public class ParameterReplacerVisitor : ExpressionVisitor
+{
+    private readonly Expression _newExpression;
+    private readonly ParameterExpression _oldParameter;
+
+    private ParameterReplacerVisitor(ParameterExpression oldParameter, Expression newExpression)
+    {
+        _oldParameter = oldParameter;
+        _newExpression = newExpression;
+    }
+
+    internal static Expression Replace(Expression expression, ParameterExpression oldParameter, Expression newExpression)
+      => new ParameterReplacerVisitor(oldParameter, newExpression).Visit(expression);
+
+    protected override Expression VisitParameter(ParameterExpression p)
+      => p == _oldParameter ? _newExpression : p;
+}
diff --git a/DD.Persistence.Database/Helpers/QueryBuilders.cs b/DD.Persistence.Database/Helpers/QueryBuilders.cs
index 8529230..64783b0 100644
--- a/DD.Persistence.Database/Helpers/QueryBuilders.cs
+++ b/DD.Persistence.Database/Helpers/QueryBuilders.cs
@@ -23,7 +23,6 @@ public static class QueryBuilders
         return query;
     }
 
-
     public static async Task<PaginationContainer<TDto>> ApplyPagination<TEntity, TDto>(
         this IQueryable<TEntity> query,
         PaginationRequest request,
diff --git a/DD.Persistence.Database/Specifications/AndSpecification.cs b/DD.Persistence.Database/Specifications/AndSpecification.cs
new file mode 100644
index 0000000..776ce3a
--- /dev/null
+++ b/DD.Persistence.Database/Specifications/AndSpecification.cs
@@ -0,0 +1,22 @@
+using Ardalis.Specification;
+
+namespace DD.Persistence.Database.Specifications;
+public class AndSpecification<TEntity> : Specification<TEntity>
+{
+    public AndSpecification(ISpecification<TEntity> first, ISpecification<TEntity> second)
+    {
+        if (first is null || second is null)
+            return;
+
+        ApplyCriteria(first);
+        ApplyCriteria(second);
+    }
+
+    private void ApplyCriteria(ISpecification<TEntity> specification)
+    {
+        foreach (var criteria in specification.WhereExpressions)
+        {
+            Query.Where(criteria.Filter);
+        }
+    }
+}
diff --git a/DD.Persistence.Database/Specifications/EmptySpecification.cs b/DD.Persistence.Database/Specifications/EmptySpecification.cs
deleted file mode 100644
index 010d0a9..0000000
--- a/DD.Persistence.Database/Specifications/EmptySpecification.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-using Ardalis.Specification;
-
-namespace DD.Persistence.Database.Specifications;
-
-/// <summary>
-/// Пустая спецификация (вспомогательная)
-/// </summary>
-/// <typeparam name="T"></typeparam>
-public class EmptySpecification<T> : Specification<T>
-{
-    public EmptySpecification()
-    {
-    }
-}
\ No newline at end of file
diff --git a/DD.Persistence.Database/Specifications/OrSpecification.cs b/DD.Persistence.Database/Specifications/OrSpecification.cs
new file mode 100644
index 0000000..75e573e
--- /dev/null
+++ b/DD.Persistence.Database/Specifications/OrSpecification.cs
@@ -0,0 +1,15 @@
+using Ardalis.Specification;
+using DD.Persistence.Database.Postgres.Extensions;
+
+namespace DD.Persistence.Database.Specifications;
+public class OrSpecification<TEntity> : Specification<TEntity>
+{
+    public OrSpecification(ISpecification<TEntity> first, ISpecification<TEntity> second)
+    {
+        var orExpression = first.Or(second);
+        if (orExpression == null) 
+            return;
+
+        Query.Where(orExpression);
+    }
+}
diff --git a/DD.Persistence.Database/Specifications/ValuesItem/ValueEqaulSpecification.cs b/DD.Persistence.Database/Specifications/ValuesItem/ValueEqaulSpecification.cs
index f5fd385..f85153f 100644
--- a/DD.Persistence.Database/Specifications/ValuesItem/ValueEqaulSpecification.cs
+++ b/DD.Persistence.Database/Specifications/ValuesItem/ValueEqaulSpecification.cs
@@ -19,10 +19,4 @@ public class ValueEqaulSpecification<TEntity> : Specification<TEntity>
     {
         Query.Where(e => Convert.ToDouble(e.Values[index]) == value);
     }
-
-    public ValueEqaulSpecification(int index, DateTimeOffset? value)
-    {
-        // ToDo: рассмотреть возможность более вменяемого парсинга для даты
-        Query.Where(e => DateTimeOffset.Parse(Convert.ToString(e.Values[index])!) == value);
-    }
 }
diff --git a/DD.Persistence.Database/Specifications/ValuesItem/ValueGreateOrEqualSpecification.cs b/DD.Persistence.Database/Specifications/ValuesItem/ValueGreateOrEqualSpecification.cs
index ada97ad..695bffe 100644
--- a/DD.Persistence.Database/Specifications/ValuesItem/ValueGreateOrEqualSpecification.cs
+++ b/DD.Persistence.Database/Specifications/ValuesItem/ValueGreateOrEqualSpecification.cs
@@ -10,13 +10,13 @@ namespace DD.Persistence.Database.Specifications.ValuesItem;
 public class ValueGreateOrEqualSpecification<TEntity> : Specification<TEntity>
     where TEntity : IValuesItem
 {
+    public ValueGreateOrEqualSpecification(int index, string? value)
+    {
+        Query.Where(e => string.Compare(Convert.ToString(e.Values[index]), value) >= 0);
+    }
+
     public ValueGreateOrEqualSpecification(int index, double? value)
     {
         Query.Where(e => Convert.ToDouble(e.Values[index]) >= value);
     }
-
-    public ValueGreateOrEqualSpecification(int index, DateTimeOffset? value)
-    {
-        Query.Where(e => DateTimeOffset.Parse(Convert.ToString(e.Values[index])!) >= value);
-    }
 }
diff --git a/DD.Persistence.Database/Specifications/ValuesItem/ValueGreateSpecification.cs b/DD.Persistence.Database/Specifications/ValuesItem/ValueGreateSpecification.cs
index c0ee199..f42a7e2 100644
--- a/DD.Persistence.Database/Specifications/ValuesItem/ValueGreateSpecification.cs
+++ b/DD.Persistence.Database/Specifications/ValuesItem/ValueGreateSpecification.cs
@@ -10,13 +10,13 @@ namespace DD.Persistence.Database.Specifications.ValuesItem;
 public class ValueGreateSpecification<TEntity> : Specification<TEntity>
     where TEntity : IValuesItem
 {
+    public ValueGreateSpecification(int index, string? value)
+    {
+        Query.Where(e => string.Compare(Convert.ToString(e.Values[index]), value) > 0);
+    }
+
     public ValueGreateSpecification(int index, double? value)
     {
         Query.Where(e => Convert.ToDouble(e.Values[index]) > value);
     }
-
-    public ValueGreateSpecification(int index, DateTimeOffset? value)
-    {
-        Query.Where(e => DateTimeOffset.Parse(Convert.ToString(e.Values[index])!) > value);
-    }
 }
diff --git a/DD.Persistence.Database/Specifications/ValuesItem/ValueLessOrEqualSpecification.cs b/DD.Persistence.Database/Specifications/ValuesItem/ValueLessOrEqualSpecification.cs
index c749955..81709f0 100644
--- a/DD.Persistence.Database/Specifications/ValuesItem/ValueLessOrEqualSpecification.cs
+++ b/DD.Persistence.Database/Specifications/ValuesItem/ValueLessOrEqualSpecification.cs
@@ -10,13 +10,13 @@ namespace DD.Persistence.Database.Specifications.ValuesItem;
 public class ValueLessOrEqualSpecification<TEntity> : Specification<TEntity>
     where TEntity : IValuesItem
 {
+    public ValueLessOrEqualSpecification(int index, string? value)
+    {
+        Query.Where(e => string.Compare(Convert.ToString(e.Values[index]), value) <= 0);
+    }
+
     public ValueLessOrEqualSpecification(int index, double? value)
     {
         Query.Where(e => Convert.ToDouble(e.Values[index]) <= value);
     }
-
-    public ValueLessOrEqualSpecification(int index, DateTimeOffset? value)
-    {
-        Query.Where(e => DateTimeOffset.Parse(Convert.ToString(e.Values[index])!) <= value);
-    }
 }
diff --git a/DD.Persistence.Database/Specifications/ValuesItem/ValueLessSpecification.cs b/DD.Persistence.Database/Specifications/ValuesItem/ValueLessSpecification.cs
index ac29eb2..4c308d4 100644
--- a/DD.Persistence.Database/Specifications/ValuesItem/ValueLessSpecification.cs
+++ b/DD.Persistence.Database/Specifications/ValuesItem/ValueLessSpecification.cs
@@ -10,13 +10,13 @@ namespace DD.Persistence.Database.Specifications.ValuesItem;
 public class ValueLessSpecification<TEntity> : Specification<TEntity>
     where TEntity : IValuesItem
 {
+    public ValueLessSpecification(int index, string? value)
+    {
+        Query.Where(e => string.Compare(Convert.ToString(e.Values[index]), value) < 0);
+    }
+
     public ValueLessSpecification(int index, double? value)
     {
         Query.Where(e => Convert.ToDouble(e.Values[index]) < value);
     }
-
-    public ValueLessSpecification(int index, DateTimeOffset? value)
-    {
-        Query.Where(e => DateTimeOffset.Parse(Convert.ToString(e.Values[index])!) < value);
-    }
 }
diff --git a/DD.Persistence.Database/Specifications/ValuesItem/ValueNotEqaulSpecification.cs b/DD.Persistence.Database/Specifications/ValuesItem/ValueNotEqualSpecification.cs
similarity index 60%
rename from DD.Persistence.Database/Specifications/ValuesItem/ValueNotEqaulSpecification.cs
rename to DD.Persistence.Database/Specifications/ValuesItem/ValueNotEqualSpecification.cs
index bbe65d7..668d415 100644
--- a/DD.Persistence.Database/Specifications/ValuesItem/ValueNotEqaulSpecification.cs
+++ b/DD.Persistence.Database/Specifications/ValuesItem/ValueNotEqualSpecification.cs
@@ -7,21 +7,16 @@ namespace DD.Persistence.Database.Specifications.ValuesItem;
 /// Спецификация неравенства значений IValuesItem в соответствии с индексацией
 /// </summary>
 /// <typeparam name="TEntity"></typeparam>
-public class ValueNotEqaulSpecification<TEntity> : Specification<TEntity>
+public class ValueNotEqualSpecification<TEntity> : Specification<TEntity>
     where TEntity : IValuesItem
 {
-    public ValueNotEqaulSpecification(int index, string? value)
+    public ValueNotEqualSpecification(int index, string? value)
     {
         Query.Where(e => Convert.ToString(e.Values[index]) != value);
     }
 
-    public ValueNotEqaulSpecification(int index, double? value)
+    public ValueNotEqualSpecification(int index, double? value)
     {
         Query.Where(e => Convert.ToDouble(e.Values[index]) != value);
     }
-
-    public ValueNotEqaulSpecification(int index, DateTimeOffset? value)
-    {
-        Query.Where(e => DateTimeOffset.Parse(Convert.ToString(e.Values[index])!) != value);
-    }
 }
diff --git a/DD.Persistence.Test/FilterBuilderShould.cs b/DD.Persistence.Test/FilterBuilderShould.cs
index f32f09c..09735c3 100644
--- a/DD.Persistence.Test/FilterBuilderShould.cs
+++ b/DD.Persistence.Test/FilterBuilderShould.cs
@@ -4,8 +4,11 @@ using DD.Persistence.Filter.Models;
 using DD.Persistence.Filter.Models.Enumerations;
 using DD.Persistence.Models;
 using DD.Persistence.Database.Postgres.Helpers;
+using System.Text.Json;
 
 namespace DD.Persistence.Test;
+
+/// ToDo: переписать под Theory
 public class FilterBuilderShould
 {
     private readonly SpecificationEvaluator SpecificationEvaluator;
@@ -19,12 +22,28 @@ public class FilterBuilderShould
     {
         //arrange
         var discriminatorId = Guid.NewGuid();
-        var dataScheme = new DataScheme()
+        var dataSchemeProperties = new SchemePropertyDto[]
         {
-            DiscriminatorId = discriminatorId,
-            PropNames = ["A", "B", "C"],
-            PropTypes = [PropTypeEnum.DateTime, PropTypeEnum.Double, PropTypeEnum.String]
+            new SchemePropertyDto()
+            {
+                Index = 0,
+                PropertyName = "A",
+                PropertyKind = JsonValueKind.String
+            },
+            new SchemePropertyDto()
+            {
+                Index = 1,
+                PropertyName = "B",
+                PropertyKind = JsonValueKind.Number
+            },
+            new SchemePropertyDto()
+            {
+                Index = 2,
+                PropertyName = "C",
+                PropertyKind = JsonValueKind.String
+            }
         };
+        var dataScheme = new DataSchemeDto(discriminatorId, dataSchemeProperties);
         var filterDate = DateTime.Now.AddMinutes(-1);
         var root = new TVertex(
             OperationEnum.Or,
@@ -40,26 +59,22 @@ public class FilterBuilderShould
             new TimestampedValues { 
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-1),
-                Values = new object[] { filterDate.AddMinutes(-1), 200, "IsEqualText" }, // true
-                DataScheme = dataScheme
+                Values = new object[] { filterDate.AddMinutes(-1), 200, "IsEqualText" } // true
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-2),
-                Values = new object[] { filterDate.AddMinutes(1), 2.21, "IsNotEqualText" }, // true
-                DataScheme = dataScheme
+                Values = new object[] { filterDate.AddMinutes(1), 2.21, "IsNotEqualText" } // true
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-3),
-                Values = new object[] { filterDate.AddMinutes(-1), 2.22, "IsNotEqualText" }, // false
-                DataScheme = dataScheme
+                Values = new object[] { filterDate.AddMinutes(-1), 2.22, "IsNotEqualText" } // false
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-4),
-                Values = new object[] { filterDate.AddMinutes(-1), 2.21, "IsNotEqualText" }, // false
-                DataScheme = dataScheme
+                Values = new object[] { filterDate.AddMinutes(-1), 2.21, "IsNotEqualText" } // false
             }
         }
         .AsQueryable();
@@ -86,12 +101,16 @@ public class FilterBuilderShould
     {
         //arrange
         var discriminatorId = Guid.NewGuid();
-        var dataScheme = new DataScheme()
+        var dataSchemeProperties = new SchemePropertyDto[]
         {
-            DiscriminatorId = discriminatorId,
-            PropNames = ["A"],
-            PropTypes = [PropTypeEnum.Double]
+            new SchemePropertyDto()
+            {
+                Index = 0,
+                PropertyName = "A",
+                PropertyKind = JsonValueKind.Number
+            }
         };
+        var dataScheme = new DataSchemeDto(discriminatorId, dataSchemeProperties);
         var root = new TVertex(
             OperationEnum.Or,
             new TVertex(
@@ -118,38 +137,32 @@ public class FilterBuilderShould
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-1),
-                Values = new object[] { 1 }, // true
-                DataScheme = dataScheme
+                Values = new object[] { 1 } // true
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-2),
-                Values = new object[] { 1.96 }, // false
-                DataScheme = dataScheme
+                Values = new object[] { 1.96 } // false
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-3),
-                Values = new object[] { 1.97 }, // true
-                DataScheme = dataScheme
+                Values = new object[] { 1.97 } // true
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-4),
-                Values = new object[] { 1.98 }, // false
-                DataScheme = dataScheme
+                Values = new object[] { 1.98 } // false
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-5),
-                Values = new object[] { 1.99 }, // true
-                DataScheme = dataScheme
+                Values = new object[] { 1.99 } // true
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-6),
-                Values = new object[] { 2 }, // false
-                DataScheme = dataScheme
+                Values = new object[] { 2 } // false
             }
         }
         .AsQueryable();
@@ -177,12 +190,35 @@ public class FilterBuilderShould
         //arrange
         var discriminatorId = Guid.NewGuid();
         var filterDate = DateTimeOffset.Now;
-        var dataScheme = new DataScheme()
+        var dataSchemeProperties = new SchemePropertyDto[]
         {
-            DiscriminatorId = discriminatorId,
-            PropNames = ["A", "B", "C", "D"],
-            PropTypes = [PropTypeEnum.Double, PropTypeEnum.Double, PropTypeEnum.String, PropTypeEnum.DateTime]
+            new SchemePropertyDto()
+            {
+                Index = 0,
+                PropertyName = "A",
+                PropertyKind = JsonValueKind.Number
+            },
+            new SchemePropertyDto()
+            {
+                Index = 1,
+                PropertyName = "B",
+                PropertyKind = JsonValueKind.Number
+            },
+            new SchemePropertyDto()
+            {
+                Index = 2,
+                PropertyName = "C",
+                PropertyKind = JsonValueKind.String
+            },
+            new SchemePropertyDto()
+            {
+                Index = 3,
+                PropertyName = "D",
+                PropertyKind = JsonValueKind.String
+            }
         };
+        var dataScheme = new DataSchemeDto(discriminatorId, dataSchemeProperties);
+
         var root = new TVertex(
             OperationEnum.Or,
             new TVertex(
@@ -201,32 +237,27 @@ public class FilterBuilderShould
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-1),
-                Values = new object[] { 1, 2.22, "IsNotEqualText", DateTimeOffset.Now.AddMinutes(-1) }, // true
-                DataScheme = dataScheme
+                Values = new object[] { 1, 2.22, "IsNotEqualText", DateTimeOffset.Now.AddMinutes(-1) } // true
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-2),
-                Values = new object[] { 2, 1.11, "IsNotEqualText", DateTimeOffset.Now.AddMinutes(-1) }, // true
-                DataScheme = dataScheme
+                Values = new object[] { 2, 1.11, "IsNotEqualText", DateTimeOffset.Now.AddMinutes(-1) } // true
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-3),
-                Values = new object[] { 2, 2.22, "IsEqualText", DateTimeOffset.Now.AddMinutes(-1) }, // true
-                DataScheme = dataScheme
+                Values = new object[] { 2, 2.22, "IsEqualText", DateTimeOffset.Now.AddMinutes(-1) } // true
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-4),
-                Values = new object[] { 2, 2.22, "IsNotEqualText", filterDate }, // true
-                DataScheme = dataScheme
+                Values = new object[] { 2, 2.22, "IsNotEqualText", filterDate } // true
             },
             new TimestampedValues {
                 DiscriminatorId = discriminatorId,
                 Timestamp = DateTimeOffset.Now.AddMinutes(-1),
-                Values = new object[] { 2, 2.22, "IsNotEqualText", DateTimeOffset.Now.AddMinutes(-1) }, // false
-                DataScheme = dataScheme
+                Values = new object[] { 2, 2.22, "IsNotEqualText", DateTimeOffset.Now.AddMinutes(-1) } // false
             }
         }
         .AsQueryable();
diff --git a/DD.Persistence.Test/TimestampedValuesServiceShould.cs b/DD.Persistence.Test/TimestampedValuesServiceShould.cs
index 1a51eb1..e1e7cdc 100644
--- a/DD.Persistence.Test/TimestampedValuesServiceShould.cs
+++ b/DD.Persistence.Test/TimestampedValuesServiceShould.cs
@@ -2,6 +2,7 @@ using DD.Persistence.Models;
 using DD.Persistence.Repositories;
 using DD.Persistence.Services;
 using NSubstitute;
+using System.Text.Json;
 
 namespace DD.Persistence.Test;
 public class TimestampedValuesServiceShould
@@ -44,10 +45,10 @@ public class TimestampedValuesServiceShould
         {
             var values = new Dictionary<string, object>()
             {
-                { "A", i },
-                { "B", i * 1.1 },
-                { "C", $"Any{i}" },
-                { "D", DateTimeOffset.Now },
+                { "A", GetJsonFromObject(i) },
+                { "B", GetJsonFromObject(i * 1.1) },
+                { "C", GetJsonFromObject($"Any{i}") },
+                { "D", GetJsonFromObject(DateTimeOffset.Now) }
             };
 
             yield return new TimestampedValuesDto()
@@ -57,4 +58,11 @@ public class TimestampedValuesServiceShould
             };
         }
     }
+
+    private static JsonElement GetJsonFromObject(object value)
+    {
+        var jsonString = JsonSerializer.Serialize(value);
+        var doc = JsonDocument.Parse(jsonString);
+        return doc.RootElement;
+    }
 }