diff --git a/backend/typescript/migrations/2022.01.10T17.43.07.create-entity-table.ts b/backend/typescript/migrations/2022.01.10T17.43.07.create-entity-table.ts
deleted file mode 100644
index 7f4d37f..0000000
--- a/backend/typescript/migrations/2022.01.10T17.43.07.create-entity-table.ts
+++ /dev/null
@@ -1,46 +0,0 @@
-import { DataType } from "sequelize-typescript";
-
-import { Migration } from "../umzug";
-
-const TABLE_NAME = "entities";
-
-export const up: Migration = async ({ context: sequelize }) => {
-  await sequelize.getQueryInterface().createTable(TABLE_NAME, {
-    id: {
-      type: DataType.INTEGER,
-      allowNull: false,
-      primaryKey: true,
-      autoIncrement: true,
-    },
-    string_field: {
-      type: DataType.STRING,
-      allowNull: false,
-    },
-    int_field: {
-      type: DataType.INTEGER,
-      allowNull: false,
-    },
-    enum_field: {
-      type: DataType.ENUM("A", "B", "C", "D"),
-      allowNull: false,
-    },
-    string_array_field: {
-      type: DataType.ARRAY(DataType.STRING),
-      allowNull: false,
-    },
-    bool_field: {
-      type: DataType.BOOLEAN,
-      allowNull: false,
-    },
-    file_name: {
-      type: DataType.STRING,
-      allowNull: false,
-    },
-    createdAt: DataType.DATE,
-    updatedAt: DataType.DATE,
-  });
-};
-
-export const down: Migration = async ({ context: sequelize }) => {
-  await sequelize.getQueryInterface().dropTable(TABLE_NAME);
-};
diff --git a/backend/typescript/migrations/2022.01.10T17.43.41.create-user-table.ts b/backend/typescript/migrations/2022.01.10T17.43.41.create-user-table.ts
deleted file mode 100644
index 4e7e8d0..0000000
--- a/backend/typescript/migrations/2022.01.10T17.43.41.create-user-table.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-import { DataType } from "sequelize-typescript";
-
-import { Migration } from "../umzug";
-
-const TABLE_NAME = "users";
-
-export const up: Migration = async ({ context: sequelize }) => {
-  await sequelize.getQueryInterface().createTable(TABLE_NAME, {
-    id: {
-      type: DataType.INTEGER,
-      allowNull: false,
-      primaryKey: true,
-      autoIncrement: true,
-    },
-    first_name: {
-      type: DataType.STRING,
-      allowNull: false,
-    },
-    last_name: {
-      type: DataType.STRING,
-      allowNull: false,
-    },
-    auth_id: {
-      type: DataType.STRING,
-      allowNull: false,
-    },
-    role: {
-      type: DataType.ENUM("User", "Admin"),
-      allowNull: false,
-    },
-    createdAt: DataType.DATE,
-    updatedAt: DataType.DATE,
-  });
-};
-
-export const down: Migration = async ({ context: sequelize }) => {
-  await sequelize.getQueryInterface().dropTable(TABLE_NAME);
-};
diff --git a/backend/typescript/models/entity.model.ts b/backend/typescript/models/entity.model.ts
index 3983e6c..7d13955 100644
--- a/backend/typescript/models/entity.model.ts
+++ b/backend/typescript/models/entity.model.ts
@@ -41,30 +41,3 @@ const EntitySchema: Schema = new Schema({
 export default model<Entity>("Entity", EntitySchema);
 
 // } mongodb
-// postgresql {
-import { Column, Model, Table, DataType } from "sequelize-typescript";
-
-import { Letters } from "../types";
-
-@Table({ tableName: "entities" })
-export default class Entity extends Model {
-  @Column
-  string_field!: string;
-
-  @Column
-  int_field!: number;
-
-  @Column({ type: DataType.ENUM("A", "B", "C", "D") })
-  enum_field!: Letters;
-
-  @Column({ type: DataType.ARRAY(DataType.STRING) })
-  string_array_field!: string[];
-
-  @Column
-  bool_field!: boolean;
-
-  @Column
-  file_name!: string;
-}
-
-// } postgresql
diff --git a/backend/typescript/models/index.ts b/backend/typescript/models/index.ts
index 8420568..3fcabcf 100644
--- a/backend/typescript/models/index.ts
+++ b/backend/typescript/models/index.ts
@@ -1,19 +1,3 @@
-// postgresql {
-import * as path from "path";
-import { Sequelize } from "sequelize-typescript";
-
-const DATABASE_URL =
-  process.env.NODE_ENV === "production"
-    ? /* eslint-disable-next-line @typescript-eslint/no-non-null-assertion */
-      process.env.DATABASE_URL!
-    : `postgres://${process.env.POSTGRES_USER}:${process.env.POSTGRES_PASSWORD}@${process.env.DB_HOST}:5432/${process.env.POSTGRES_DB_DEV}`;
-
-/* eslint-disable-next-line import/prefer-default-export */
-export const sequelize = new Sequelize(DATABASE_URL, {
-  models: [path.join(__dirname, "/*.model.ts")],
-});
-
-// } postgresql
 // mongodb {
 import mongoose from "mongoose";
 
diff --git a/backend/typescript/models/simpleEntity.model.ts b/backend/typescript/models/simpleEntity.model.ts
index 0b45d2e..abde5b5 100644
--- a/backend/typescript/models/simpleEntity.model.ts
+++ b/backend/typescript/models/simpleEntity.model.ts
@@ -36,28 +36,4 @@ const SimpleEntitySchema: Schema = new Schema({
 
 export default model<SimpleEntity>("SimpleEntity", SimpleEntitySchema);
 
-// } mongodb
-// postgresql {
-import { Column, Model, Table, DataType } from "sequelize-typescript";
-
-import { Letters } from "../types";
-
-@Table({ tableName: "simple_entities" })
-export default class SimpleEntity extends Model {
-  @Column
-  string_field!: string;
-
-  @Column
-  int_field!: number;
-
-  @Column({ type: DataType.ENUM("A", "B", "C", "D") })
-  enum_field!: Letters;
-
-  @Column({ type: DataType.ARRAY(DataType.STRING) })
-  string_array_field!: string[];
-
-  @Column
-  bool_field!: boolean;
-}
-
-// } postgresql
\ No newline at end of file
+// } mongodb
\ No newline at end of file
diff --git a/backend/typescript/models/user.model.ts b/backend/typescript/models/user.model.ts
index a7f2873..3225d3a 100644
--- a/backend/typescript/models/user.model.ts
+++ b/backend/typescript/models/user.model.ts
@@ -33,24 +33,4 @@ const UserSchema: Schema = new Schema({
 
 export default mongoose.model<User>("User", UserSchema);
 
-// } mongodb
-// postgresql {
-import { Column, DataType, Model, Table } from "sequelize-typescript";
-import { Role } from "../types";
-
-@Table({ tableName: "users" })
-export default class User extends Model {
-  @Column({ type: DataType.STRING })
-  first_name!: string;
-
-  @Column({ type: DataType.STRING })
-  last_name!: string;
-
-  @Column({ type: DataType.STRING })
-  auth_id!: string;
-
-  @Column({ type: DataType.ENUM("User", "Admin") })
-  role!: Role;
-}
-
-// } postgresql
\ No newline at end of file
+// } mongodb
\ No newline at end of file
diff --git a/backend/typescript/package.json b/backend/typescript/package.json
index dd275a2..6f40d79 100644
--- a/backend/typescript/package.json
+++ b/backend/typescript/package.json
@@ -40,8 +40,6 @@
     "pg": "^8.5.1",
     "prisma": "5.14.0",
     "reflect-metadata": "^0.1.13",
-    "sequelize": "^6.5.0",
-    "sequelize-typescript": "^2.1.0",
     "swagger-ui-express": "^4.1.6",
     "ts-node": "^10.0.0",
     "umzug": "^3.0.0-beta.16",
diff --git a/backend/typescript/services/implementations/__tests__/userService.test.ts b/backend/typescript/services/implementations/__tests__/userService.test.ts
index f8beec9..dd410d8 100644
--- a/backend/typescript/services/implementations/__tests__/userService.test.ts
+++ b/backend/typescript/services/implementations/__tests__/userService.test.ts
@@ -1,5 +1,7 @@
 // postgresql {
 import { snakeCase } from "lodash";
+import { PrismaClient } from "@prisma/client";
+const prisma = new PrismaClient();
 // } postgresql
 
 import UserModel from "../../../models/user.model";
@@ -10,9 +12,6 @@ import { UserDTO } from "../../../types";
 // mongodb {
 import db from "../../../testUtils/testDb";
 // } mongodb
-// postgresql {
-import { testSql } from "../../../testUtils/testDb";
-// } postgresql
 
 const testUsers = [
   {
@@ -70,18 +69,18 @@ describe("mongo userService", (): void => {
 });
 // } mongodb
 
-// postgresql {
+// postgresql {  
 describe("pg userService", () => {
   let userService: UserService;
 
   beforeEach(async () => {
-    await testSql.sync({ force: true });
+    await prisma.$connect();
+    await prisma.user.deleteMany(); // Clear the User table before each test
     userService = new UserService();
   });
 
   afterAll(async () => {
-    await testSql.sync({ force: true });
-    await testSql.close();
+    await prisma.$disconnect();
   });
 
   it("getUsers", async () => {
@@ -93,7 +92,7 @@ describe("pg userService", () => {
       return userSnakeCase;
     });
 
-    await UserModel.bulkCreate(users);
+    await prisma.user.createMany({ data: users });
 
     const res = await userService.getUsers();
 
diff --git a/backend/typescript/testUtils/testDb.ts b/backend/typescript/testUtils/testDb.ts
index 247cb80..4453409 100644
--- a/backend/typescript/testUtils/testDb.ts
+++ b/backend/typescript/testUtils/testDb.ts
@@ -1,18 +1,12 @@
 // mongodb {
 import mongoose from "mongoose";
 // } mongodb
-// postgresql {
-import { resolve } from "path";
-// } postgresql
+
 // mongodb {
 // eslint-disable-next-line import/no-extraneous-dependencies
 import { MongoMemoryServer } from "mongodb-memory-server";
 // } mongodb
 
-// postgresql {
-import { Sequelize } from "sequelize-typescript";
-// } postgresql
-
 // mongodb {
 const mongo = new MongoMemoryServer();
 
@@ -44,17 +38,3 @@ const mongoTest = {
 
 export default mongoTest;
 // } mongodb
-
-// postgresql {
-const DATABASE_URL =
-  process.env.NODE_ENV === "production"
-    ? /* eslint-disable-next-line @typescript-eslint/no-non-null-assertion */
-      process.env.DATABASE_URL!
-    : `postgres://${process.env.POSTGRES_USER}:${process.env.POSTGRES_PASSWORD}@${process.env.DB_HOST}:5432/${process.env.POSTGRES_DB_TEST}`;
-
-/* eslint-disable-next-line import/prefer-default-export */
-export const testSql = new Sequelize(DATABASE_URL, {
-  models: [resolve(__dirname, "../models/*.model.ts")],
-  logging: false,
-});
-// } postgresql
diff --git a/backend/typescript/umzug.ts b/backend/typescript/umzug.ts
deleted file mode 100644
index 077322d..0000000
--- a/backend/typescript/umzug.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-import * as path from "path";
-
-import { Umzug, SequelizeStorage } from "umzug";
-import { Sequelize } from "sequelize-typescript";
-
-const DATABASE_URL =
-  process.env.NODE_ENV === "production"
-    ? /* eslint-disable-next-line @typescript-eslint/no-non-null-assertion */
-      process.env.DATABASE_URL!
-    : `postgres://${process.env.POSTGRES_USER}:${process.env.POSTGRES_PASSWORD}@${process.env.DB_HOST}:5432/${process.env.POSTGRES_DB_DEV}`;
-
-const sequelize = new Sequelize(DATABASE_URL, {
-  models: [path.join(__dirname, "/*.model.ts")],
-});
-
-export const migrator = new Umzug({
-  migrations: {
-    glob: ["migrations/*.ts", { cwd: __dirname }],
-  },
-  context: sequelize,
-  storage: new SequelizeStorage({
-    sequelize,
-  }),
-  logger: console,
-});
-
-export type Migration = typeof migrator._types.migration;