Databases Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Sybase (267)
DB Architecture (141)
DB Administration (291)

DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
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Database Management (1411)
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Databases Interview Questions

Questions Answers Views Company eMail

How to invoke the data pump export utility?

1187

How to define an anonymous block?

1158

How to list all tables in your schema?

1053

How to use "in out" parameter properly?

1048

How to use windows user to connect to the server?

990

How to execute a stored program unit?

1077

How to load data from external tables to regular tables?

1062

What happens to the current transaction if a ddl statement is executed?

1013

How to drop a tablespace?

1043

How to retrieve the count of updated rows?

1128

What happens to the indexes if a table is recovered?

993

How to get execution path reports on query statements?

987

How to add another datafile to a tablespace?

1040

How to assign values to variables?

1104

How to retrieve data from an cursor to a record?

1104

Un-Answered Questions { Databases }

How to fetch alternate records from a table?

1244

Difference between Row Id and Row Num?

688

1. Tell me about your self? 2. Latest Project Introduction? 3. Difference between server jobs and parallel jobs? 4. Seq-Seq Explain its behavior and execution mode and which parallelism technique is used? 5. What is padding characters? 6. Seq-Seq, Seq-Copy-Seq which one is the best and efficient? 7. How many reject links do we have to a transformer? 8. How many reject links to join stage? 9. Difference between join and lookup? 10. How to design PX routine? 11. How can we call job in another job? 12. Difference between batch and sequencer? 13. Which Database is used? 14. What is change capture? Give briefing of that? 15. What is change Code? Explain? 16. How you call UNIX in Ds? 17. How do you call JCL in UNIX? 18. How do you pass the job status of one job to another job? Have designed any job sequencer? 19. How do you find a file in existed directory? 20. How can you call parallel jobs in transformer? 21. Execution of jobs in command line? 22. Tuning of sql queries? 23. What is orchestrating metadata? 24. What are junk dimension? 25. What are the third party tools you are used? 26. What are the system variables you have used? IBM 1. What is virtual dataset? 2. How do you handle reject link to a peek stage? 3. What is transaction table? 4. Which one is the efficient from the following? a. ODBC enterprise b. Oracle enterprise 5. How can you extract data from excel sheet? Do you know how to parameterize, this option? 6. Six pages of complex query I have, how do you simplify this query? 7. Difference between dataset and lookup file set?

1905

What are foreign keys in database?

965

What is system catalog or catalog relation?

1082

What is sharding in mongodb? Explain

What happens if null values are involved in datetime operations?

975

Explain in details security in SQL azure?

121

How to define an anonymous block?

1158

What is external database?

863

What are journaling in mongodb?

What is an indexing strategy?

1010

Is postgresql a relational database?

850

Can we use where clause with group by?

904

What is a left inner join?

1015

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