IBM DB2 面试题与答案
问题 31. What is the purpose of the db2dart utility in DB2?
The db2dart utility is used for database analysis and recovery. It can be used to check the consistency of database objects and repair certain types of corruption.
问题 32. Explain the concept of table space in DB2.
A table space is a container for database objects such as tables, indexes, and long field columns. It provides a logical grouping of related objects for storage management.
问题 33. What is a correlated scalar subquery in DB2?
A correlated scalar subquery is a subquery that returns a single value and is evaluated once for each row processed by the outer query, using values from that row.
问题 34. Explain the purpose of the db2pd command in DB2.
The db2pd command is used to display information about various aspects of the DB2 instance, such as memory usage, locks, and active applications.
问题 35. What is a trigger in DB2?
A trigger is a set of SQL statements that are automatically executed, or 'triggered,' in response to a specified event on a particular table or view.
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