diff --git a/eme-backend/.env.example b/eme-backend/.env.example
new file mode 100644
index 0000000..d20cbed
--- /dev/null
+++ b/eme-backend/.env.example
@@ -0,0 +1,13 @@
+PORT=3000
+NODE_ENV=development
+FRONTEND_URL=http://localhost:8080
+
+DATABASE_URL="sqlserver://localhost:1433;database=eme_db;user=sa;password=YourStrongPassword123!;encrypt=true;trustServerCertificate=true"
+DB_SERVER=localhost
+DB_PORT=1433
+DB_NAME=eme_db
+DB_USER=sa
+DB_PASSWORD=YourStrongPassword123!
+
+AZURE_TENANT_ID=
+AZURE_CLIENT_ID=
diff --git a/eme-backend/prisma/migrations/20260602141919_init/migration.sql b/eme-backend/prisma/migrations/20260602141919_init/migration.sql
new file mode 100644
index 0000000..231b349
--- /dev/null
+++ b/eme-backend/prisma/migrations/20260602141919_init/migration.sql
@@ -0,0 +1,71 @@
+BEGIN TRY
+
+BEGIN TRAN;
+
+-- CreateTable
+CREATE TABLE [dbo].[campus] (
+    [id] INT NOT NULL IDENTITY(1,1),
+    [nom] NVARCHAR(1000) NOT NULL,
+    [adresse] NVARCHAR(1000) NOT NULL,
+    [ville] NVARCHAR(1000) NOT NULL,
+    [code_postal] NVARCHAR(1000) NOT NULL,
+    [actif] BIT NOT NULL,
+    [created_at] DATETIME2 NOT NULL,
+    [updated_at] DATETIME2 NOT NULL,
+    CONSTRAINT [campus_pkey] PRIMARY KEY CLUSTERED ([id])
+);
+
+-- CreateTable
+CREATE TABLE [dbo].[role] (
+    [id] INT NOT NULL IDENTITY(1,1),
+    [code] NVARCHAR(1000) NOT NULL,
+    [libelle] NVARCHAR(1000) NOT NULL,
+    [description] NVARCHAR(1000) NOT NULL,
+    CONSTRAINT [role_pkey] PRIMARY KEY CLUSTERED ([id])
+);
+
+-- CreateTable
+CREATE TABLE [dbo].[utilisateur] (
+    [id] INT NOT NULL IDENTITY(1,1),
+    [microsoft_id] NVARCHAR(1000) NOT NULL,
+    [nom] NVARCHAR(1000) NOT NULL,
+    [prenom] NVARCHAR(1000) NOT NULL,
+    [email] NVARCHAR(1000) NOT NULL,
+    [classe] NVARCHAR(1000) NOT NULL,
+    [role_id] INT NOT NULL,
+    [campus_id] INT NOT NULL,
+    [actif] BIT NOT NULL,
+    [created_at] DATETIME2 NOT NULL,
+    [updated_at] DATETIME2 NOT NULL,
+    CONSTRAINT [utilisateur_pkey] PRIMARY KEY CLUSTERED ([id])
+);
+
+-- CreateTable
+CREATE TABLE [dbo].[categorie_materiel] (
+    [id] INT NOT NULL IDENTITY(1,1),
+    [nom] NVARCHAR(1000) NOT NULL,
+    [description] NVARCHAR(1000) NOT NULL,
+    [actif] BIT NOT NULL,
+    [created_at] DATETIME2 NOT NULL,
+    [updated_at] DATETIME2 NOT NULL,
+    CONSTRAINT [categorie_materiel_pkey] PRIMARY KEY CLUSTERED ([id])
+);
+
+-- AddForeignKey
+ALTER TABLE [dbo].[utilisateur] ADD CONSTRAINT [utilisateur_role_id_fkey] FOREIGN KEY ([role_id]) REFERENCES [dbo].[role]([id]) ON DELETE NO ACTION ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE [dbo].[utilisateur] ADD CONSTRAINT [utilisateur_campus_id_fkey] FOREIGN KEY ([campus_id]) REFERENCES [dbo].[campus]([id]) ON DELETE NO ACTION ON UPDATE CASCADE;
+
+COMMIT TRAN;
+
+END TRY
+BEGIN CATCH
+
+IF @@TRANCOUNT > 0
+BEGIN
+    ROLLBACK TRAN;
+END;
+THROW
+
+END CATCH
diff --git a/eme-backend/prisma/migrations/20260604103016_add_defaults_and_timestamps/migration.sql b/eme-backend/prisma/migrations/20260604103016_add_defaults_and_timestamps/migration.sql
new file mode 100644
index 0000000..e31ba8e
--- /dev/null
+++ b/eme-backend/prisma/migrations/20260604103016_add_defaults_and_timestamps/migration.sql
@@ -0,0 +1,25 @@
+BEGIN TRY
+
+BEGIN TRAN;
+
+-- AlterTable
+ALTER TABLE [dbo].[campus] ADD CONSTRAINT [campus_actif_df] DEFAULT 1 FOR [actif], CONSTRAINT [campus_created_at_df] DEFAULT CURRENT_TIMESTAMP FOR [created_at];
+
+-- AlterTable
+ALTER TABLE [dbo].[categorie_materiel] ADD CONSTRAINT [categorie_materiel_actif_df] DEFAULT 1 FOR [actif], CONSTRAINT [categorie_materiel_created_at_df] DEFAULT CURRENT_TIMESTAMP FOR [created_at];
+
+-- AlterTable
+ALTER TABLE [dbo].[utilisateur] ADD CONSTRAINT [utilisateur_actif_df] DEFAULT 1 FOR [actif], CONSTRAINT [utilisateur_created_at_df] DEFAULT CURRENT_TIMESTAMP FOR [created_at];
+
+COMMIT TRAN;
+
+END TRY
+BEGIN CATCH
+
+IF @@TRANCOUNT > 0
+BEGIN
+    ROLLBACK TRAN;
+END;
+THROW
+
+END CATCH
diff --git a/eme-backend/prisma/migrations/20260604125356_add_unique_constraints_and_nullable_classe/migration.sql b/eme-backend/prisma/migrations/20260604125356_add_unique_constraints_and_nullable_classe/migration.sql
new file mode 100644
index 0000000..ef2a3c3
--- /dev/null
+++ b/eme-backend/prisma/migrations/20260604125356_add_unique_constraints_and_nullable_classe/migration.sql
@@ -0,0 +1,28 @@
+BEGIN TRY
+
+BEGIN TRAN;
+
+-- AlterTable
+ALTER TABLE [dbo].[utilisateur] ALTER COLUMN [classe] NVARCHAR(1000) NULL;
+
+-- CreateIndex
+ALTER TABLE [dbo].[role] ADD CONSTRAINT [role_code_key] UNIQUE NONCLUSTERED ([code]);
+
+-- CreateIndex
+ALTER TABLE [dbo].[utilisateur] ADD CONSTRAINT [utilisateur_microsoft_id_key] UNIQUE NONCLUSTERED ([microsoft_id]);
+
+-- CreateIndex
+ALTER TABLE [dbo].[utilisateur] ADD CONSTRAINT [utilisateur_email_key] UNIQUE NONCLUSTERED ([email]);
+
+COMMIT TRAN;
+
+END TRY
+BEGIN CATCH
+
+IF @@TRANCOUNT > 0
+BEGIN
+    ROLLBACK TRAN;
+END;
+THROW
+
+END CATCH
diff --git a/eme-backend/prisma/migrations/migration_lock.toml b/eme-backend/prisma/migrations/migration_lock.toml
new file mode 100644
index 0000000..e2a882e
--- /dev/null
+++ b/eme-backend/prisma/migrations/migration_lock.toml
@@ -0,0 +1,3 @@
+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "mssql"
diff --git a/eme-backend/prisma/schema.prisma b/eme-backend/prisma/schema.prisma
new file mode 100644
index 0000000..ac247d6
--- /dev/null
+++ b/eme-backend/prisma/schema.prisma
@@ -0,0 +1,60 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "sqlserver"
+}
+
+model Campus {
+  id           Int           @id @default(autoincrement())
+  nom          String
+  adresse      String
+  ville        String
+  codePostal   String        @map("code_postal")
+  actif        Boolean       @default(true)
+  createdAt    DateTime      @default(now()) @map("created_at")
+  updatedAt    DateTime      @updatedAt @map("updated_at")
+  utilisateurs Utilisateur[]
+
+  @@map("campus")
+}
+
+model Role {
+  id           Int           @id @default(autoincrement())
+  code         String        @unique
+  libelle      String
+  description  String
+  utilisateurs Utilisateur[]
+
+  @@map("role")
+}
+
+model Utilisateur {
+  id          Int      @id @default(autoincrement())
+  microsoftId String   @unique @map("microsoft_id")
+  nom         String
+  prenom      String
+  email       String   @unique
+  classe      String?
+  roleId      Int      @map("role_id")
+  campusId    Int      @map("campus_id")
+  actif       Boolean  @default(true)
+  createdAt   DateTime @default(now()) @map("created_at")
+  updatedAt   DateTime @updatedAt @map("updated_at")
+  campus      Campus   @relation(fields: [campusId], references: [id])
+  role        Role     @relation(fields: [roleId], references: [id])
+
+  @@map("utilisateur")
+}
+
+model CategorieMateriel {
+  id          Int      @id @default(autoincrement())
+  nom         String
+  description String
+  actif       Boolean  @default(true)
+  createdAt   DateTime @default(now()) @map("created_at")
+  updatedAt   DateTime @updatedAt @map("updated_at")
+
+  @@map("categorie_materiel")
+}