DBS-C01 Deployment and Migration Practice Question
A company is migrating a MySQL database to Amazon Aurora MySQL. The database has several stored procedures and triggers. During the migration, some stored procedures fail to execute. What is the most likely cause?
⚠ Common exam trap
Watch out — candidates often assume Aurora MySQL is a drop-in replacement for all MySQL features, but the exam tests awareness of specific incompatibilities in stored procedures, triggers, and functions that are not supported or behave differently in Aurora.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The stored procedures use features that are not compatible with Aurora MySQL.
Aurora MySQL is designed to be compatible with MySQL 5.6, 5.7, and 8.0, but it does not support all MySQL features. Stored procedures that rely on deprecated or non-standard MySQL features, such as certain SQL modes, storage engine-specific syntax, or unsupported functions, will fail to execute after migration. This is the most common cause of stored procedure failures during a migration to Aurora MySQL.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Aurora does not support stored procedures.
Why it's wrong here
Aurora supports stored procedures.
- ✗
The stored procedures exceed the maximum size limit in Aurora.
Why it's wrong here
Aurora has size limits but unlikely cause of failure.
- ✓
The stored procedures use features that are not compatible with Aurora MySQL.
Why this is correct
Aurora MySQL has some differences; stored procedures may need modifications.
- ✗
The stored procedures use MyISAM tables, which are not supported by Aurora.
Why it's wrong here
Aurora supports InnoDB, but MyISAM is not supported; however, the issue is likely not table engine alone.
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