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 2247

What are Stored Procedures and When would we Use Them?

1 2259

How to Handle Missing Data in a Database?

1 2031

Describe the Process of Feature Engineering using SQL.

1 971

What are the different types of databases?

1 1146

What are ACID properties in databases?

1 2374

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

1 1142

What is indexing, and how does it improve performance?

1 1022

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

1 2638

What is the CAP theorem?

1 1044

How would you optimize a slow SQL query?

1 2653

How do you handle duplicate records in a database?

1 1010

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

1 1005

How do you ensure database security?

1 1134

What would you do if a database crashes in production?

1 918

Un-Answered Questions { Databases }

What are the various Database states.

916

What is java sql drivermanager?

1037

How to display a past time in days, hours and minutes?

978

What is mutated trigger? In single user mode we got mutated error, as a dba how you will resolve it?

526

How would you remodel an existing access database?

881

Write a query to display even rows in student table using mysql?

857

How to list all dsn entries on your local machine using odbc_data_source()?

988

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

852

What are the different types of sql server replication? : sql server replication

1182

How to use 'mysql' to run sql statements?

1031

please send me oracle pl/sql exp resume. and also faqs...

2456

discuss about myisam index statistics collection. : Sql dba

915

What are the benefits of mysql?

886

Does mongodb use javascript?

List different types of sybase index.

827

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