Which storage engine is the default in MySQL 8.0 and later?
Which SQL statement is used to add a new column to an existing table?
What is the purpose of the `AUTO_INCREMENT` attribute in MySQL?
Which keyword is used to retrieve only distinct values from a column in a SELECT statement?
What is the function of the `FOREIGN KEY` constraint?
Which of the following is NOT a valid data type in MySQL?
Which command is used to display the structure of a table?
What is the purpose of the `GROUP BY` clause in a SELECT statement?
Which isolation level offers the highest degree of protection against concurrency issues but may impact performance?
What is the purpose of the `EXPLAIN` statement in MySQL?