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

How to Optimize Database Queries for Performance?

1 2689

What are Stored Procedures and When would we Use Them?

1 2708

How to Handle Missing Data in a Database?

1 2092

Describe the Process of Feature Engineering using SQL.

1 1043

What are the different types of databases?

1 1218

What are ACID properties in databases?

1 2865

What is the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN?

1 1217

What is indexing, and how does it improve performance?

1 1094

What is a deadlock in SQL? How can you prevent it?

1 3157

What is the CAP theorem?

1 1112

How would you optimize a slow SQL query?

1 3153

How do you handle duplicate records in a database?

1 1059

How would you design a database for an e-commerce website?

1 1062

How do you ensure database security?

1 1205

What would you do if a database crashes in production?

1 990

Un-Answered Questions { Databases }

Why is it called postgresql?

888

What is the default table size in sybase?

889

What is a degree of relation?

1015

How do I edit a trigger in mysql?

893

Do you know what the restrictions applicable while creating views are? : sql server architect

782

What is logshipping and its purpose?

990

What are the different types of indexes?

1118

How does sql developer connect to oracle database?

1002

What is normalization? Explain different forms of normalization?

1160

How can we find out which auto increment was assigned on Last insert?

1098

How to install sql server 2005 express edition?

1122

How do I open an access database?

826

Are foreign key constraints necessary?

836

how to check myisam tables for errors? : Sql dba

1321

Can you tell the reasons for selecting lamp(linux, apache, mysql, php) instead of any other combination of software programs, servers, and operating system?

889

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