SQL Real-World Projects: Employee Management Database

Create Department and Role Tables

Design and create SQL tables for Departments and Roles with appropriate columns and constraints.

Expected output: Two tables created with correct schema and constraints.

Hint: Include primary keys and ensure Role table has a Salary column.

Insert Sample Employee Data

Insert at least five employee records linking to existing departments and roles.

Expected output: Five employee records inserted successfully.

Hint: Use valid foreign key values matching your Departments and Roles tables.

Write a Query to List Employees by Department

Write an SQL query that lists employee names grouped by their department.

Expected output: Query returns employee names organized by department.

Hint: Use JOIN and GROUP BY clauses.

Foreign keys establish relationships between tables, ensuring referential integrity by linking employee records to their respective departments and roles.

Normalization reduces data redundancy and improves data consistency, making the database more efficient and easier to maintain.

A JOIN is used to combine employee data with department and role information to generate reports showing employee names alongside their department and salary.