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

1. Which of the following statements are true for tables using the FEDERATED storage engine?

A) The FEDERATED storage engine supports SELECT statements.
B) Each FEDERATED table is represented on disk by a .frm format file in the database directory of the local server.
C) The FEDERATED storage engine does not support transactions.
D) The FEDERATED storage engine supports transaction if the storage engine of the referenced table supports transactions.
E) For each FEDERATED table, the content of the referenced table is stored in a .FED file on the local server.
F) The FEDERATED storage engine supports DELETE, UPDATE, and INSERT statements.

2. The MySQL server host crashes at 10:00 in the morning, and is brought back online at 10:30. In order to ensure that all data are consistent, a copy is first made of the table, tablespace and log files currently on the server host, and these files are then restored from a backup made at 03:00 the same morning. What should be done in order to bring the database to the state it was at just before the server host crashed?

A) The mysql_restore utility should be used to update the server to its last known state.
B) Once the backup files from 03:00 have been restored, there is nothing more that can be done to restore the database files.
C) The procedure described is wrong; instead, the mysqlcheck utility should be used and only if that fails should backup copies be restored.
D) The binary logs recorded after the backup at 03:00 should be re-applied to make the database file consistent with the state just before the crash.

3. Which of the following statements are true for InnoDB?

A) InnoDB is not enabled by default.
B) Tablespace and log files have to be configured explicitly to be created.
C) Tablespace and log files will be created even if not configured explicitly.
D) InnoDB is enabled by default.

4. After a server crash, some InnoDB tables need to be repaired. However, when the server is restarted, auto-recover failed. How would you repair the InnoDB tables?

A) Execute the OPTIMIZE TABLE command.
B) Restart the server with the --innodb_force_recovery option.
C) Execute the REPAIR TABLE command.

5. Which of the following SQL constructs are not available with all storage engines, i.e. which are storage engine dependent?

A) BEGIN and ROLLBACK have an effect only for tables managed by transactional storage engines, such as InnoDB.
B) LOAD DATA INFILE only works for tables managed by disk based storage engines, such as InnoDB orMyISAM.
C) OPTIMIZE TABLE only works for tables managed by storage engines that perform table level locking, such as MyISAM.
D) Some index types are available only for particular storage engines. For example, only the MyISAMengine supports full-text or spatial indexes.

Solutions: