All of the following are guidelines for better query design EXCEPT:
A) understand how indexes are used in query processing.
B) use a lot of self-joins.
C) write simple queries.
D) retrieve only the data that you need.

Question

Quizplus · Accepted Answer

Using a lot of self-joins can complicate queries and potentially degrade performance, which is not a guideline for better query design.

All of the Following Are Guidelines for Better Query Design