diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/AgenceSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/AgenceSqlDto.cs
index 8680156..5059f70 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/AgenceSqlDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/AgenceSqlDto.cs
@@ -1,10 +1,14 @@
-using System.Diagnostics.CodeAnalysis;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Diagnostics.CodeAnalysis;
 using espacecollab.backend.infrastructure.sql.dtos.Interfaces;
 
 namespace espacecollab.backend.infrastructure.sql.dtos;
 
+[Table("agence")]
 public class AgenceSqlDto : IGenericIdSqlDto
 {
+    [Key]
     public int Id { get; set; }
     public string Name { get; set; }
 
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/BusinessUnitSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/BusinessUnitSqlDto.cs
index c311787..ce6534e 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/BusinessUnitSqlDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/BusinessUnitSqlDto.cs
@@ -1,10 +1,14 @@
-using System.Diagnostics.CodeAnalysis;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Diagnostics.CodeAnalysis;
 using espacecollab.backend.infrastructure.sql.dtos.Interfaces;
 
 namespace espacecollab.backend.infrastructure.sql.dtos;
 
+[Table("businessunit")]
 public class BusinessUnitSqlDto : IGenericIdSqlDto
 {
+    [Key]
     public int Id { get; set; }
     public string Name { get; set; }
     public int AgenceId { get; set; }
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/CollaborateurSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/CollaborateurSqlDto.cs
index b01751e..8803af6 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/CollaborateurSqlDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/CollaborateurSqlDto.cs
@@ -2,9 +2,11 @@
 using System.Diagnostics.CodeAnalysis;
 using espacecollab.backend.infrastructure.sql.dtos.Interfaces;
 using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace espacecollab.backend.infrastructure.sql.dtos;
 
+[Table("collaborateur")]
 public class CollaborateurSqlDto : IGenericIdSqlDto
 {
     [Key]
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/FonctionSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/FonctionSqlDto.cs
index 0246266..b1d03db 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/FonctionSqlDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/FonctionSqlDto.cs
@@ -1,10 +1,14 @@
-using System.Diagnostics.CodeAnalysis;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Diagnostics.CodeAnalysis;
 using espacecollab.backend.infrastructure.sql.dtos.Interfaces;
 
 namespace espacecollab.backend.infrastructure.sql.dtos
 {
+    [Table("fonction")]
     public class FonctionSqlDto : IGenericIdSqlDto
     {
+        [Key]
         public int Id { get; set; }
         public string Intitule { get; set; }
 
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/PeriodeEssaiSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/PeriodeEssaiSqlDto.cs
index 8d361de..78e8327 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/PeriodeEssaiSqlDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/PeriodeEssaiSqlDto.cs
@@ -1,11 +1,15 @@
 using espacecollab.backend.infrastructure.sql.dtos.Values;
 using System.Diagnostics.CodeAnalysis;
 using espacecollab.backend.infrastructure.sql.dtos.Interfaces;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace espacecollab.backend.infrastructure.sql.dtos;
 
+[Table("periodeessai")]
 public class PeriodeEssaiSqlDto : IGenericIdSqlDto
 {
+    [Key]
     public int Id { get; set; }
     public DateTime StartingDate { get; set; }
     public DateTime PlannedEndingDate { get; set; }
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/ProjetSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/ProjetSqlDto.cs
index 9cd830b..fc1198b 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/ProjetSqlDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/ProjetSqlDto.cs
@@ -1,10 +1,14 @@
-using System.Diagnostics.CodeAnalysis;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Diagnostics.CodeAnalysis;
 using espacecollab.backend.infrastructure.sql.dtos.Interfaces;
 
 namespace espacecollab.backend.infrastructure.sql.dtos;
 
+[Table("projet")]
 public class ProjetSqlDto : IGenericIdSqlDto
 {
+    [Key]
     public int Id { get; set; }
     public string Name { get; set; }
     public string Client { get; set; }
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/ReferencementSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/ReferencementSqlDto.cs
index 09318a5..11dd489 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/ReferencementSqlDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/ReferencementSqlDto.cs
@@ -1,10 +1,14 @@
-using System.Diagnostics.CodeAnalysis;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Diagnostics.CodeAnalysis;
 using espacecollab.backend.infrastructure.sql.dtos.Interfaces;
 
 namespace espacecollab.backend.infrastructure.sql.dtos;
 
+[Table("referencement")]
 public class ReferencementSqlDto : IGenericIdSqlDto
 {
+    [Key]
     public int Id { get; set; }
     public DateTime StartingDate { get; set; }
     public DateTime EndingDate { get; set; }
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/SiteSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/SiteSqlDto.cs
index f639708..6a7faa4 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/SiteSqlDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/SiteSqlDto.cs
@@ -1,10 +1,14 @@
-using System.Diagnostics.CodeAnalysis;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Diagnostics.CodeAnalysis;
 using espacecollab.backend.infrastructure.sql.dtos.Interfaces;
 
 namespace espacecollab.backend.infrastructure.sql.dtos;
 
+[Table("site")]
 public class SiteSqlDto : IGenericIdSqlDto
 {
+    [Key]
     public int Id { get; set; }
     public string Name { get; set; }
     public string Address { get; set; }
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/TechnologieSqlDto.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/TechnologieSqlDto.cs
index 01df2e0..3654135 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/TechnologieSqlDto.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql.dtos/TechnologieSqlDto.cs
@@ -1,10 +1,14 @@
 using espacecollab.backend.infrastructure.sql.dtos.Interfaces;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 using System.Diagnostics.CodeAnalysis;
 
 namespace espacecollab.backend.infrastructure.sql.dtos;
 
+[Table("technologie")]
 public class TechnologieSqlDto : IGenericIdSqlDto
 {
+    [Key]
     public int Id { get; set; }
     public string Name { get; set; }
 
diff --git a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql/MainDbContext.cs b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql/MainDbContext.cs
index b5a1163..1f7f0bd 100644
--- a/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql/MainDbContext.cs
+++ b/Collaborateur_Epa_Back/espacecollab.backend.infrastructure.sql/MainDbContext.cs
@@ -28,12 +28,10 @@ public class MainDbContext : DbContext
         modelBuilder.Entity<FonctionSqlDto>().Property(p => p.Id).UseMySqlIdentityColumn();
         modelBuilder.Entity<TechnologieSqlDto>().Property(p => p.Id).UseMySqlIdentityColumn();
         modelBuilder.Entity<CollaborateurSqlDto>().Property(p => p.Id).UseMySqlIdentityColumn();
-
         modelBuilder
             .Entity<CollaborateurSqlDto>()
             .Property(e => e.Gender)
             .HasConversion<string>();
-
         modelBuilder
            .Entity<CollaborateurSqlDto>()
            .Property(e => e.Status)