Database Constraint Design and Implementation

Introduction

In this project, you will learn how to add various constraints to a database schema, including primary keys, foreign keys, unique constraints, default values, and check constraints. By the end of this project, you will have a better understanding of how to design and enforce data integrity rules in a relational database.

👀 Preview

🎯 Tasks

In this project, you will learn:

• How to create a composite primary key on the salgrade table
• How to specify a foreign key on the deptno field in the emp table
• How to use a unique constraint to prevent duplicates in the ename field in the emp table
• How to set a default value for the comm field in the emp table
• How to use a check constraint to prevent the entry of hire dates later than February 28, 2022 in the hiredate field in the emp table

🏆 Achievements

After completing this project, you will be able to:

• Understand the importance of data integrity constraints in database design
• Implement various types of constraints in a MySQL database
• Apply best practices for maintaining data quality and consistency
• Troubleshoot and debug issues related to database constraints