MYSQL DATABASE INTERVIEW QUESTIONS

What is cardinality in MySQL?

How does cardinality affect indexing in MySQL?

What is the difference between high cardinality and low cardinality in MySQL?

How can you check the cardinality of an index in MySQL?

Why might MySQL choose not to use an index on a low cardinality column?

Can you explain how cardinality impacts query performance in MySQL?

How would you optimize a query on a table with a mix of high and low cardinality columns?

What are the implications of cardinality on join operations in MySQL?

Can you discuss the impact of cardinality on MySQL's query optimizer decisions?

During a database certification exam, you are asked to explain how to use the ANALYZE TABLE statement in relation to cardinality. What would be your response?