Foreign Key in SQL: What is it and How to Use It | NareshIT

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In this video, we will explain what a Foreign Key is in Oracle and how it is used to maintain referential integrity in a database. A Foreign Key establishes a relationship between two tables by linking the columns from one table to the Primary Key of another table. We will also cover how to create, define, and manage Foreign Keys in Oracle SQL, along with practical examples. Whether you are a beginner or someone looking to strengthen your database skills, this tutorial will provide a clear understanding of the Foreign Key concept and its significance in database management systems.

• Definition of a Foreign Key
• Importance of Foreign Key in Database Management
• Syntax for Creating a Foreign Key in Oracle
• Creating a Foreign Key on Existing Tables
• Foreign Key Constraints
• Foreign Key Example
• Managing Foreign Key Constraints
• Checking Foreign Key Constraints
• Common Errors with Foreign Keys
• Real-world Use Cases of Foreign Keys

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Welcome to our Oracle tutorial series! In this video, we’ll explore the fundamentals of Oracle Database, a powerful platform for managing and manipulating data. Whether you’re new to Oracle or looking to enhance your skills, this series will offer comprehensive insights and practical examples.

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