Question

The common fields used in a relationship between tables are called

• A. Joint fields
• B. Main fields
• C. Table fields
• D. Key fields

Answer 1

The Correct Option is D

In relational databases, fields shared between tables for establishing relationships are termed Key fields. Key fields, specifically primary and foreign keys, are vital for data integrity and forging connections between multiple tables.

A concise explanation follows:

• Primary Key: Uniquely identifies each record within a table, guaranteeing no duplicate entries and ensuring uniqueness.
• Foreign Key: A field (or set of fields) in one table that uniquely identifies a row in another table or the same table, thereby creating a link between them.

Proper utilization of key fields is fundamental to building a resilient database structure, as they uphold referential integrity by keeping inter-table relationships consistent.