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 2696

What are Stored Procedures and When would we Use Them?

1 2719

How to Handle Missing Data in a Database?

1 2095

Describe the Process of Feature Engineering using SQL.

1 1045

What are the different types of databases?

1 1220

What are ACID properties in databases?

1 2874

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

1 1218

What is indexing, and how does it improve performance?

1 1095

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

1 3167

What is the CAP theorem?

1 1113

How would you optimize a slow SQL query?

1 3162

How do you handle duplicate records in a database?

1 1062

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

1 1063

How do you ensure database security?

1 1209

What would you do if a database crashes in production?

1 992

Un-Answered Questions { Databases }

What are programming functions?

955

What is data compression? : sql server database administration

976

How do I start and stop sql server?

1024

What is a table in oracle?

981

1.how to fetch a value and Execute store procudure in mysql(INNODB) using phpMyAdmin? 2.can i wright a package in mysql database(INNODB)?

2509

what does myisamchk do? : Sql dba

1022

How to include character strings in sql statements?

986

Table - Products has number of products as below Productid ProductName 1 iPhone 2 iPad 3 BlackBerry Table - SalesPersonProduct has the below records Salespersonid productid S1 1 S1 2 S1 3 S2 1 S3 2 Write a SQL query that returns the total number of sold products

2833

Can any one send me oracle form and reports tutorials from which i may get help.contact me on my mail cse_kashif@hotmail.com.

2230

What is bulk collect in pl sql?

1089

What is the maximum number of triggers, you can apply on a single table?

998

What is an advantage of a database?

1040

What is varchar used for?

1082

What are the advantages of the mirroring?

1094

What is the use of Markers?

596

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