Question 417 of 1,663
DBS-C01 Workload-Specific Database Design Practice Question
Exhibit
Refer to the exhibit. === Amazon RDS MySQL Error Log === 2023-03-15 10:45:12 123456 [ERROR] [MY-013142] [Server] InnoDB: Table 'mydb.orders' has a FULLTEXT index on column 'description'. The maximum column length for FULLTEXT index is 4294967295. However, the column length is 4294967295 which may cause performance issues. 2023-03-15 10:45:12 123456 [ERROR] [MY-010067] [Server] Cannot create FULLTEXT index on column 'description' because the column is too long.
A developer is trying to create a FULLTEXT index on a column in an RDS MySQL instance. The error log shows the index creation failed. What is the most likely cause?
⚠ Common exam trap
Test-takers frequently assume InnoDB does not support FULLTEXT indexes (a common misconception from older MySQL versions) or that table size is the issue, but the actual constraint is the column length limit.
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 column 'description' has a length that exceeds the maximum allowed for FULLTEXT index.
In RDS MySQL, FULLTEXT indexes have a maximum column length limit of 1000 bytes for InnoDB and 1000 characters for MyISAM. If the 'description' column exceeds this limit, the index creation will fail. This is the most likely cause because the error log indicates a failure without other configuration issues.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The column 'description' has a length that exceeds the maximum allowed for FULLTEXT index.
Why this is correct
The error states the column length is 4294967295, which is too large.
- ✗
The table size is too large for a FULLTEXT index to be created.
Why it's wrong here
Table size is not the issue; it's the column length.
- ✗
The table uses a character set that is not compatible with FULLTEXT indexes.
Why it's wrong here
No character set incompatibility is mentioned.
- ✗
The InnoDB engine does not support FULLTEXT indexes.
Why it's wrong here
InnoDB supports FULLTEXT indexes since MySQL 5.6.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 24, 2026
This DBS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DBS-C01 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.