SQL - Table Relationships
Which of the following is a common reason to use a one-to-one relationship in database design?
Which of the following is a common reason to use a one-to-one relationship in database design?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the purpose of one-to-one relationships
One-to-one relationships are often used to split data logically, such as separating sensitive or optional data into another table.Step 2: Match the correct reason
Splitting a large table into smaller related tables improves organization and can enhance performance.Final Answer:
To split a large table into smaller related tables for better organization -> Option BQuick Check:
One-to-one use case = splitting tables [OK]
Quick Trick: Use one-to-one to split large tables logically [OK]
Common Mistakes:
MISTAKES- Confusing one-to-one with one-to-many or many-to-many
- Thinking one-to-one allows multiple related records
- Assuming one-to-one is for storing multiple addresses
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