Oracle Questions et reponses d'entretien
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Question 16. Can a Tablespace hold objects from different Schemes?
Yes
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Question 17. Can objects of the same Schema reside in different tablespace?
Yes
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Question 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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Question 19. Do View contain Data?
Views do not contain or store data.
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Question 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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Les plus utiles selon les utilisateurs :
- What are the components of physical database structure of Oracle database?
- What are the components of logical database structure of Oracle database?
- What is a tablespace?
- What is SYSTEM tablespace and when is it created?
- Explain the relationship among database, tablespace and data file?