What is unique key example?


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More Database Management Interview Questions

What are five types of database models?

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8. Sort, Lookup What kind of technique (partition) is used? 9. How can you handle exceptions in job sequencer? 10. How do you apply custom conditions an exceptions (How do you trigger exceptions in job sequence?) 11. I have a job with 3 possibilities? Finish with ok…..Abort…….Warning} How do you handle these in Job sequencer 12. How do you connect both OK and Warning can we? 13. How to find which process is running currently? 14. How do you find the disk usage in UNIX? 15. How do you combine 2 sequential files having same metadata of same file names? 16. How do you implement SCD in Ds? 17. Explain the situation where you have applied? 18. How do you apply new changes to? 19. Difference between change capture and Change apply? 20. Explain Compare Stage? 21. What is Surrogate key? 22. How to solve the problem of null values?

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What are indexes? Mention the differences between the clustered and non-clustered index?

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Explain the key constraints and constraints on Null Values with examples?

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which is the best institute to learn Oracle DBA 10g/11g, please advise, someone?

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what is Data Definiton Language ?

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What are the advantages of using Query Strings?

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How can I access my database remotely?

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Are databases stored on servers?

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IF Statements BLOCK 1 . IF a >= b THEN do_this …..; ELSE do_that….; END IF BLOCK 2 . IF a < b THEN do_that …..; ELSE do_this….; END IF; • Given any pair of non-NULL values for “a” and”b”, will Block 1 and Block 2 do the same thing? • What if either “a” or”b” (or both) is NULL?

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Which dbms is best?

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What is the main purpose of a database?

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