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

Oracle (3239)
SQL Server (4518)
MS Access (429)
MySQL (1402)

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

DB Development (113)
SQL PLSQL (3312)
MongoDB (502)
IBM Informix (50)

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

Database Management (1391)
Databases AllOther (288)

Databases Interview Questions

Questions Answers Views Company eMail

Is left join faster than join?

549

Does inner join remove duplicates?

524

Can we rollback after truncate?

569

Can we create a trigger on view?

491

Does truncate release storage space?

564

Are views faster than queries?

549

Can we perform dml on view?

556

How does a trigger work?

541

Can we insert delete data in view?

548

How does a covering index work?

535

Can we have two clustered index on a table?

568

How many types of primary keys are there?

533

Can we insert data into view?

527

How do you define a foreign key?

540

Can we join tables without foreign key?

525

Un-Answered Questions { Databases }

How to login to the server without an instance?

624

What is a recovery catalog?

What is it unwise to create wide clustered index keys?

587

What do you understand by sql server agent?

538

What is the load plans in odi?

300

Can you explain what are the restrictions applicable while creating views? : SQL Server Architecture

500

Explain the different types of join operations?

504

What is localdb mssqllocaldb?

623

How can you use check constraints for self referential integrity?

526

What is a null value?

659

State few elements in couchbase node?

You want to delete a table in sybase. How would you do it?

465

In which language neo4j is written?

Do you know what are the steps to process a single select statement?

538

What's the difference between star and snow flake schema?

512

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