diff --git a/Webzine.Repository/DbStyleRepository.cs b/Webzine.Repository/DbStyleRepository.cs
index 0f0255b..bf92035 100644
--- a/Webzine.Repository/DbStyleRepository.cs
+++ b/Webzine.Repository/DbStyleRepository.cs
@@ -1,4 +1,6 @@
+using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Logging;
+using Webzine.EntitiesContext;
 using Webzine.Entity;
 using Webzine.Repository.Contracts;
 
@@ -10,14 +12,17 @@ namespace Webzine.Repository;
 public class DbStyleRepository : IStyleRepository
 {
     private readonly ILogger<DbStyleRepository> logger;
+    private readonly WebzineDbContext context;
 
     /// <summary>
     /// Initializes a new instance of the <see cref="DbStyleRepository"/> class.
     /// </summary>
     /// <param name="logger">Le service de journalisation injecté pour suivre les opérations du repository.</param>
-    public DbStyleRepository(ILogger<DbStyleRepository> logger)
+    /// <param name="context">Le contexte de base de données injecté.</param>
+    public DbStyleRepository(ILogger<DbStyleRepository> logger, WebzineDbContext context)
     {
         this.logger = logger;
+        this.context = context;
         this.logger.LogDebug(1, "NLog injected into DbStyleRepository");
     }
 
@@ -27,7 +32,12 @@ public class DbStyleRepository : IStyleRepository
     /// <param name="style">L'objet style à ajouter.</param>
     public void Add(Style style)
     {
-        throw new NotImplementedException();
+        this.logger.LogInformation($"Adding new style: {style.Libelle}");
+
+        this.context.Styles.Add(style);
+        this.context.SaveChanges();
+
+        this.logger.LogDebug($"Style added with Id: {style.IdStyle}");
     }
 
     /// <summary>
@@ -36,7 +46,20 @@ public class DbStyleRepository : IStyleRepository
     /// <param name="style">L'objet style à supprimer.</param>
     public void Delete(Style style)
     {
-        throw new NotImplementedException();
+        this.logger.LogInformation($"Deleting style with Id: {style.IdStyle}");
+
+        // Check if style exists
+        var existingStyle = this.context.Styles.Find(style.IdStyle);
+        if (existingStyle == null)
+        {
+            this.logger.LogWarning($"Style with Id {style.IdStyle} not found for deletion");
+            throw new InvalidOperationException($"Style with Id {style.IdStyle} not found.");
+        }
+
+        this.context.Styles.Remove(existingStyle);
+        this.context.SaveChanges();
+
+        this.logger.LogDebug($"Style deleted: {style.IdStyle}");
     }
 
     /// <summary>
@@ -46,7 +69,29 @@ public class DbStyleRepository : IStyleRepository
     /// <returns>Le style correspondant à l'identifiant fourni, ou null si aucun style n'est trouvé.</returns>
     public Style Find(int id)
     {
-        throw new NotImplementedException();
+        if (id <= 0)
+        {
+            this.logger.LogWarning($"Tentative de recherche d'un style avec un Id invalide: {id}");
+            return new Style();
+        }
+
+        this.logger.LogDebug($"Finding style with Id: {id}");
+
+        var style = this.context.Styles
+            .Include(s => s.Titres)
+            .FirstOrDefault(s => s.IdStyle == id);
+
+        if (style == null)
+        {
+            this.logger.LogWarning($"Style with Id {id} not found");
+            style = new Style();
+        }
+        else
+        {
+            this.logger.LogDebug($"Found style: {style.Libelle}");
+        }
+
+        return style;
     }
 
     /// <summary>
@@ -55,7 +100,14 @@ public class DbStyleRepository : IStyleRepository
     /// <returns>Une collection de tous les styles présents dans la base de données.</returns>
     public IEnumerable<Style> FindAll()
     {
-        throw new NotImplementedException();
+        this.logger.LogDebug("Finding all styles");
+
+        var styles = this.context.Styles
+            .OrderBy(s => s.Libelle)
+            .ToList();
+
+        this.logger.LogDebug($"Found {styles.Count} total styles");
+        return styles;
     }
 
     /// <summary>
@@ -64,6 +116,19 @@ public class DbStyleRepository : IStyleRepository
     /// <param name="style">L'objet style avec les informations mises à jour.</param>
     public void Update(Style style)
     {
-        throw new NotImplementedException();
+        this.logger.LogInformation($"Updating style with Id: {style.IdStyle}");
+
+        var existingStyle = this.context.Styles.Find(style.IdStyle);
+        if (existingStyle == null)
+        {
+            this.logger.LogWarning($"Style with Id {style.IdStyle} not found for update");
+            throw new InvalidOperationException($"Style with Id {style.IdStyle} not found.");
+        }
+
+        // Update properties
+        existingStyle.Libelle = style.Libelle;
+
+        this.context.SaveChanges();
+        this.logger.LogDebug($"Style updated: {style.IdStyle}");
     }
 }
\ No newline at end of file
diff --git a/Webzine.Repository/DbTitreRepository.cs b/Webzine.Repository/DbTitreRepository.cs
index 86f3fe9..54be151 100644
--- a/Webzine.Repository/DbTitreRepository.cs
+++ b/Webzine.Repository/DbTitreRepository.cs
@@ -1,3 +1,4 @@
+using Microsoft.EntityFrameworkCore;
 using Webzine.EntitiesContext;
 using Microsoft.Extensions.Logging;
 using Webzine.Entity;
diff --git a/Webzine.Repository/Webzine.Repository.csproj b/Webzine.Repository/Webzine.Repository.csproj
index 364f60a..afa21ab 100644
--- a/Webzine.Repository/Webzine.Repository.csproj
+++ b/Webzine.Repository/Webzine.Repository.csproj
@@ -24,6 +24,7 @@
     </ItemGroup>
 
     <ItemGroup>
+      <ProjectReference Include="..\Webzine.EntitiesContext\Webzine.EntitiesContext.csproj" />
       <ProjectReference Include="..\Webzine.Entity\Webzine.Entity.csproj" />
       <ProjectReference Include="..\Webzine.Repository.Contracts\Webzine.Repository.Contracts.csproj" />
     </ItemGroup>