Managing existing data in a MySQL database is just as important as inserting new records. This quiz will test your understanding of updating and deleting table data using SQL commands like UPDATE and DELETE. You’ll also explore transaction control using COMMIT and ROLLBACK, ensuring data integrity and preventing accidental data loss.
Answer the following questions to assess your knowledge of modifying and removing records in MySQL.
1.
Which SQL clause is used to remove specific records rather than all records from a table?
2.
Which SQL statement is safer to use when deleting rows from a table?
3.
Which SQL statement is used to remove records from a table?
4.
Which SQL statement completely removes a table from a database?
5.
What is the purpose of the ROLLBACK statement?
6.
Which SQL statement is used to modify existing records in a table?
7.
Which clause must be included in an UPDATE statement to ensure only specific rows are modified?
8.
What happens if you exit MySQL without committing a transaction?
9.
What is the default behavior of MySQL regarding committing changes?
10.
Which SQL keyword is used to ensure that an update continues even if an error occurs?
11.
Which SQL statement is used to finalize changes in a transaction?
12.
Which SQL clause should be included in a DELETE statement to remove only specific rows?
13.
What does the START TRANSACTION statement do?
14.
How can you update multiple rows in a table at once?
15.
How can you check if auto-commit is enabled in MySQL?
16.
What happens if the WHERE clause is omitted in an UPDATE statement?
17.
Which SQL keyword is used to revert changes made within a transaction?
