SQL - Table Relationships
In a one-to-many relationship between two tables, which table usually contains the foreign key?
In a one-to-many relationship between two tables, which table usually contains the foreign key?
easy📝 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand one-to-many relationship
In a one-to-many relationship, one record in the 'one' table relates to many records in the 'many' table.Step 2: Identify foreign key placement
The foreign key is placed in the 'many' table to link back to the 'one' table.Final Answer:
The table on the 'many' side -> Option BQuick Check:
Foreign key location = many side [OK]
Quick Trick: Foreign key goes in the 'many' side table [OK]
Common Mistakes:
MISTAKES- Placing foreign key in the 'one' side table
- Thinking both tables have foreign keys
- Assuming no foreign key is needed
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