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MYSQL MySQL 5.0 Database Administrator Certified Professional Exam, Part I Sample Questions:

1. Which of the following are effects of defining foreign keys in InnoDB tables without specifying either ON UPDATE or ON DELETE?

A) InnoDB will allow both deletes and updates on the primary key on a parent record even if they have corresponding child records.
B) InnoDB will disallow any delete or update on the primary key on a parent record that may have corresponding child records.
C) InnoDB will disallow foreign keys without specifying either ON UPDATE or ON DELETE.
D) InnoDB will disallow any delete or update on the primary key regardless if there is a corresponding child record or not.

2. Which types of startup options can be configured for the server?

A) Location of important directories and files
B) The root password
C) Performance related settings
D) Logging settings
E) Storage Engine dependent options
F) Backup intervals

3. Which of the following statements are true?

A) InnoDB supports Foreign Keys.
B) MyISAM supports cascaded UPDATE statements.
C) InnoDB supports cascaded UPDATE statements.
D) InnoDB supports cascaded DELETE statements.
E) MyISAM supports Foreign Keys.
F) MyISAM supports cascaded DELETE statements.

4. Which two of the following statements best describe the purpose of the slow query log and how you enable it?

A) The slow log is enabled with the --log-slow-queries or --log-slow-queries=file_name option.
B) The slow log records the text of all queries that exceed the long_query_time variable.
C) The slow log records the timestamps of when the server is performing slowly and when it is low on resources.
D) The slow log is enabled with the --log-slow or --log-slow=file_name option.

5. The ANALYZE TABLE command should be used...

A) To improve performance by updating index distribution statistics.
B) After large amounts of table data have changed.
C) To check a tables structure to see if it may have been damaged and needs repair.
D) When you need to find out why a query is taking a long time to execute.

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