Oracle 面试题与答案
相关差异对比
问题 16. Can a Tablespace hold objects from different Schemes?
Yes
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问题 17. Can objects of the same Schema reside in different tablespace?
Yes
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问题 18. What is the use of Control File?
When an instance of an ORACLE database is started, its control file is used to identify the database and redo log files that must be opened for database operation to proceed. It is also used in database recovery.
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问题 19. Do View contain Data?
Views do not contain or store data.
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问题 20. What are the Referential actions supported by FOREIGN KEY integrity constraint?
UPDATE and DELETE Restrict - A referential integrity rule that disallows the update or deletion of referenced data. DELETE Cascade - When a referenced row is deleted all associated dependent rows are deleted.
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