diff --git a/University/UniversityContracts/BuisnessLogicContracts/IActivityLogic.cs b/University/UniversityContracts/BuisnessLogicContracts/IActivityLogic.cs
index 8c663cd..586d514 100644
--- a/University/UniversityContracts/BuisnessLogicContracts/IActivityLogic.cs
+++ b/University/UniversityContracts/BuisnessLogicContracts/IActivityLogic.cs
@@ -1,8 +1,15 @@
-using UniversityDataModels.Models;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
 
 namespace UniversityContracts.BuisnessLogicContracts
 {
     public interface IActivityLogic
     {
+        List<ActivityViewModel>? ReadList(ActivitySearchModel? model);
+        ActivityViewModel? ReadElement(ActivitySearchModel model);
+        bool Create(ActivityBindingModel model);
+        bool Update(ActivityBindingModel model);
+        bool Delete(ActivityBindingModel model);
     }
 }
diff --git a/University/UniversityContracts/BuisnessLogicContracts/IDisciplineLogic.cs b/University/UniversityContracts/BuisnessLogicContracts/IDisciplineLogic.cs
index 360c2fd..c5d4ab8 100644
--- a/University/UniversityContracts/BuisnessLogicContracts/IDisciplineLogic.cs
+++ b/University/UniversityContracts/BuisnessLogicContracts/IDisciplineLogic.cs
@@ -1,9 +1,16 @@
-using UniversityDataModels.Models;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
 
 namespace UniversityContracts.BuisnessLogicContracts
 {
 
     public interface IDisciplineLogic
     {
+        List<DisciplineViewModel>? ReadList(DisciplineSearchModel? model);
+        DisciplineViewModel? ReadElement(DisciplineSearchModel model);
+        bool Create(DisciplineBindingModel model);
+        bool Update(DisciplineBindingModel model);
+        bool Delete(DisciplineBindingModel model);
     }
 }
diff --git a/University/UniversityContracts/BuisnessLogicContracts/IExaminationResultLogic.cs b/University/UniversityContracts/BuisnessLogicContracts/IExaminationResultLogic.cs
index e83817e..ba139b7 100644
--- a/University/UniversityContracts/BuisnessLogicContracts/IExaminationResultLogic.cs
+++ b/University/UniversityContracts/BuisnessLogicContracts/IExaminationResultLogic.cs
@@ -1,8 +1,15 @@
-using UniversityDataModels.Models;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
 
 namespace UniversityContracts.BuisnessLogicContracts
 {
     public interface IExaminationResultLogic
     {
+        List<ExaminationResultViewModel>? ReadList(ExaminationResultSearchModel? model);
+        ExaminationResultViewModel? ReadElement(ExaminationResultSearchModel model);
+        bool Create(ExaminationResultBindingModel model);
+        bool Update(ExaminationResultBindingModel model);
+        bool Delete(ExaminationResultBindingModel model);
     }
 }
diff --git a/University/UniversityContracts/BuisnessLogicContracts/IReportTypeLogic.cs b/University/UniversityContracts/BuisnessLogicContracts/IReportTypeLogic.cs
index 660fef4..4c8d7c8 100644
--- a/University/UniversityContracts/BuisnessLogicContracts/IReportTypeLogic.cs
+++ b/University/UniversityContracts/BuisnessLogicContracts/IReportTypeLogic.cs
@@ -1,9 +1,16 @@
-using UniversityDataModels.Models;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
 
 namespace UniversityContracts.BuisnessLogicContracts
 {
 
     public interface IReportTypeLogic
     {
+        List<ReportTypeViewModel>? ReadList(ReportTypeSearchModel? model);
+        ReportTypeViewModel? ReadElement(ReportTypeSearchModel model);
+        bool Create(ReportTypeBindingModel model);
+        bool Update(ReportTypeBindingModel model);
+        bool Delete(ReportTypeBindingModel model);
     }
 }
diff --git a/University/UniversityContracts/BuisnessLogicContracts/IStatementLogic.cs b/University/UniversityContracts/BuisnessLogicContracts/IStatementLogic.cs
index 94e7628..8827f95 100644
--- a/University/UniversityContracts/BuisnessLogicContracts/IStatementLogic.cs
+++ b/University/UniversityContracts/BuisnessLogicContracts/IStatementLogic.cs
@@ -1,8 +1,15 @@
-using UniversityDataModels.Models;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
 
 namespace UniversityContracts.BuisnessLogicContracts
 {
     public interface IStatementLogic
     {
+        List<StatementViewModel>? ReadList(StatementSearchModel? model);
+        StatementViewModel? ReadElement(StatementSearchModel model);
+        bool Create(StatementBindingModel model);
+        bool Update(StatementBindingModel model);
+        bool Delete(StatementBindingModel model);
     }
 }
diff --git a/University/UniversityContracts/BuisnessLogicContracts/IStudentLogic.cs b/University/UniversityContracts/BuisnessLogicContracts/IStudentLogic.cs
index b103ef8..24b56be 100644
--- a/University/UniversityContracts/BuisnessLogicContracts/IStudentLogic.cs
+++ b/University/UniversityContracts/BuisnessLogicContracts/IStudentLogic.cs
@@ -1,8 +1,15 @@
-using UniversityDataModels.Models;
+using UniversityContracts.BindingModels;
+using UniversityContracts.SearchModels;
+using UniversityContracts.ViewModels;
 
 namespace UniversityContracts.BuisnessLogicContracts
 {
     public interface IStudentLogic
     {
+        List<StudentViewModel>? ReadList(StudentSearchModel? model);
+        StudentViewModel? ReadElement(StudentSearchModel model);
+        bool Create(StudentBindingModel model);
+        bool Update(StudentBindingModel model);
+        bool Delete(StudentBindingModel model);
     }
 }