[Solved] What will happen if you name two different constraints on the same table with the same name? — Ans: The database will return an error due to duplicate constraint names | SQL

SQL - Table Constraints

What will happen if you name two different constraints on the same table with the same name?

ABoth constraints will work without issues

BThe second constraint will overwrite the first one silently

CThe database will rename the second constraint automatically

DThe database will return an error due to duplicate constraint names

Step-by-Step Solution

Solution:

Step 1: Understand uniqueness requirement for constraint names
Constraint names must be unique within the same schema or table to avoid confusion.
Step 2: Identify database behavior on duplicate names
Most databases throw an error if you try to create a constraint with a duplicate name.
Final Answer:
The database will return an error due to duplicate constraint names -> Option D
Quick Check:
Duplicate constraint names cause error = C [OK]

Quick Trick: Constraint names must be unique per table/schema [OK]

Common Mistakes:

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