MySQL design feature: In MySQL, surrogate key columns typically use the AUTO_INCREMENT property to generate sequential identifiers. Is that statement accurate?

Introduction / Context:Surrogate keys are system-generated identifiers that uniquely identify rows. In MySQL, AUTO_INCREMENT is a common mechanism for producing such numeric keys without client-side generation.

Given Data / Assumptions:

• A column is defined as an integer type with AUTO_INCREMENT.
• Each insert without an explicit value produces the next sequence number.
• Engines such as InnoDB fully support AUTO_INCREMENT semantics.

Concept / Approach:Using AUTO_INCREMENT simplifies key management and avoids collisions. It is distinct from natural keys and from GUID/UUID strategies. AUTO_INCREMENT may have configuration nuances (increment step, starting value, behavior under replication).

Step-by-Step Solution:Define a table with id INT PRIMARY KEY AUTO_INCREMENT.Insert rows without specifying id.Retrieve generated values via LAST_INSERT_ID().Adjust starting values with ALTER TABLE ... AUTO_INCREMENT = n.Consider uniqueness and gaps under rollbacks or deletes.

Verification / Alternative check:Run sample DDL/DML and observe increasing identifiers.

Why Other Options Are Wrong:Support is not limited to legacy engines or versions; modern MySQL/InnoDB support this feature robustly.

Common Pitfalls:Assuming sequential without gaps; relying on order semantics of generated values.

Final Answer:Correct