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

Oracle (3253)
SQL Server (4518)
MS Access (429)
MySQL (1402)

Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)

DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)

Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)

Database Management (1411)
Databases AllOther (288)

Databases Interview Questions

Questions Answers Views Company eMail

Explain the importance of partitioning.

1 1050

Define ddl interpreter.

1 1210

Compare non-clustered and clustered index

1 948

What are the various kinds of interactions catered by dbms?

1 2197

Define database.

1 1061

What restrictions can you apply when you are creating views?

1 971

Define "correlated subqueries".

1 996

What do database languages do?

1 1014

Enlist the cursor types.

1 1102

What do you mean by query evaluation engine?

1 1048

How does index hunting help in improving query performance?

1 1004

Define fragmentation.

1 949

Enlist the various transaction phases.

1 1112

Define normalization.

1 1011

Define union all operator and union.

1 992

Un-Answered Questions { Databases }

What is the difference between upgrade and migration in sql server?

1170

What is self contained sub query?

1134

How do I find query history in sql server?

1018

What is the current version of sql?

1091

Why use identity in sql server?

1189

Is primary key always clustered index?

1087

what is bcp? When does it used? : Sql dba

1051

Design database draw er diagram for a certain scenario ?

4641

What is the difference between case version and decode version?

1097

Do we need to rebuild index after truncate?

1126

Is microsoft getting rid of access?

877

Why should you use or avoid select * statements?

1103

What is the current mysql version?

1086

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?

1972

What is normalization and what are the advantages of it?

1050

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