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

Oracle (3259)
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

What is a foreign key example?

790

Is postgresql better than oracle?

838

Why foreign key constraint is important?

820

What is the difference between oracle and postgresql?

967

What is the purpose of foreign key constraints?

871

How do you delete a row in pgadmin 4?

839

How do you create a foreign key in pgadmin 4?

820

Is postgresql like oracle?

864

Is pgadmin free?

803

Can you have a composite foreign key?

823

Is index automatically created on primary key?

853

Can a unique key be a foreign key?

844

What are the rules of setting a primary key?

838

How do you edit data in pgadmin?

870

How is postgresql different from oracle?

786

Un-Answered Questions { Databases }

How does oracle handle read consistency?

1112

What is sybase? What are its important features?

1037

What are two statement types in sql?

1130

Mention how you can inspect the source code of a function?

Why Update is too slow

1421

how the Oracle Prepares the Execution Plan and how it chooses the Optimal one?

2370

Is sql and mysql same?

955

There is a trigger defined for INSERT operations on a table, in an OLTP system. The trigger is written to instantiate a COM object and pass the newly insterted rows to it for some custom processing. What do you think of this implementation? Can this be implemented better?

2435

How to execute function in stored procedure sql server?

1172

What is offset and limit in sql?

1074

What is asa in sybase?

959

definition of cluster and non-clustered index?

3057

What are the benefits of mongodb?

What is the difference between the implicit and explicit cursors?

1073

Is it possible to replicate data from sql server to oracle? : sql server replication

1105

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