diff --git a/backend/src/main/java/ovh/herisson/Clyde/Tables/CursusCourse.java b/backend/src/main/java/ovh/herisson/Clyde/Tables/CursusCourse.java
index 30fed1c..e48e6a3 100644
--- a/backend/src/main/java/ovh/herisson/Clyde/Tables/CursusCourse.java
+++ b/backend/src/main/java/ovh/herisson/Clyde/Tables/CursusCourse.java
@@ -1,16 +1,17 @@
 package ovh.herisson.Clyde.Tables;
 
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
+import jakarta.persistence.*;
 
 @Entity
 public class CursusCourse {
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
     private int id;
+
+    @JoinColumn(name = "Cursus")
     private int cursusId;
+
+    @JoinColumn(name = "Course")
     private int courseId;
 
     public CursusCourse(int cursusId, int courseId){
diff --git a/backend/src/main/java/ovh/herisson/Clyde/Tables/Secretary.java b/backend/src/main/java/ovh/herisson/Clyde/Tables/Secretary.java
index ec7a86a..6161952 100644
--- a/backend/src/main/java/ovh/herisson/Clyde/Tables/Secretary.java
+++ b/backend/src/main/java/ovh/herisson/Clyde/Tables/Secretary.java
@@ -1,15 +1,14 @@
 package ovh.herisson.Clyde.Tables;
 
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
+import jakarta.persistence.*;
 
 @Entity
 public class Secretary {
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
     private int id;
+
+    @JoinColumn(name = "User")
     private int regNo;
     private String faculty;
 
diff --git a/backend/src/main/java/ovh/herisson/Clyde/Tables/TeacherGivenCourse.java b/backend/src/main/java/ovh/herisson/Clyde/Tables/TeacherGivenCourse.java
index 6e137c5..f2c089a 100644
--- a/backend/src/main/java/ovh/herisson/Clyde/Tables/TeacherGivenCourse.java
+++ b/backend/src/main/java/ovh/herisson/Clyde/Tables/TeacherGivenCourse.java
@@ -1,16 +1,17 @@
 package ovh.herisson.Clyde.Tables;
 
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
+import jakarta.persistence.*;
 
 @Entity
 public class TeacherGivenCourse {
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
     private int id;
+
+    @JoinColumn(name = "User")
     private int regNo;
+
+    @JoinColumn(name = "Course")
     private int courseId;
 
     //This flag helps make the difference between an assistant or a Teacher (who owns the course)
diff --git a/backend/src/main/java/ovh/herisson/Clyde/Tables/Token.java b/backend/src/main/java/ovh/herisson/Clyde/Tables/Token.java
new file mode 100644
index 0000000..0ed6606
--- /dev/null
+++ b/backend/src/main/java/ovh/herisson/Clyde/Tables/Token.java
@@ -0,0 +1,41 @@
+package ovh.herisson.Clyde.Tables;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+
+@Entity
+public class Token {
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Id
+    private int id;
+    private int regNo;
+    private String data;
+
+    public Token(int regNo, String data){
+        this.regNo = regNo;
+        this.data = data;
+    }
+
+    public Token(){}
+    public int getId() {
+        return id;
+    }
+
+    public int getRegNo() {
+        return regNo;
+    }
+
+    public void setRegNo(int regNo) {
+        this.regNo = regNo;
+    }
+
+    public String getData(){
+        return data;
+    }
+
+    public void setData(String data) {
+        this.data = data;
+    }
+}
diff --git a/backend/src/main/java/ovh/herisson/Clyde/Tables/User.java b/backend/src/main/java/ovh/herisson/Clyde/Tables/User.java
index 172fd0d..2755eff 100644
--- a/backend/src/main/java/ovh/herisson/Clyde/Tables/User.java
+++ b/backend/src/main/java/ovh/herisson/Clyde/Tables/User.java
@@ -22,8 +22,8 @@ public class User {
     private Date birthDate;
     private ovh.herisson.Clyde.Tables.Role role;
     private String password;
-
-    public User(String lastName, String firstName, String email, String adress, String country, Date birthDate, Role role){
+    private String salt;
+    public User(String lastName, String firstName, String email, String adress, String country, Date birthDate, Role role, String password, String salt){
         this.lastName = lastName;
         this.firstName = firstName;
         this.email = email;
@@ -31,6 +31,8 @@ public class User {
         this.country = country;
         this.birthDate = birthDate;
         this.role = role;
+        this.password = password;
+        this.salt = salt;
     }
 
     public User() {}
@@ -93,4 +95,19 @@ public class User {
     public void setRole(ovh.herisson.Clyde.Tables.Role role) {
         this.role = role;
     }
+    public String getPassword(){
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getSalt(){
+        return salt;
+    }
+
+    public void setSalt(String salt) {
+        this.salt = salt;
+    }
 }
diff --git a/backend/src/main/java/ovh/herisson/Clyde/Tables/UserCursus.java b/backend/src/main/java/ovh/herisson/Clyde/Tables/UserCursus.java
index 2222fdb..9460905 100644
--- a/backend/src/main/java/ovh/herisson/Clyde/Tables/UserCursus.java
+++ b/backend/src/main/java/ovh/herisson/Clyde/Tables/UserCursus.java
@@ -8,7 +8,10 @@ public class UserCursus {
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
     private int id;
+    @JoinColumn(name = "User")
     private int regNo;
+
+    @JoinColumn(name = "Cursus")
     private int cursusId;
 
     public UserCursus(int regNo, int cursusId){