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 can we Update a table with out using UPDATE command?

1 5955

What is user stored procedure & it purpose?

Wipro,

4 8416

wHAT IS THE difference between foreign key and reference key

1 4269

How do we rollback the table data in SQL Server

3 16984

write a qurey for finding the length of the sting.

Infosys, TCS,

6 14990

1. Using the XML Document below, with the URI “recipe.xml” define the following queries in XQuery: a.) Give the names of all breakfast in the menu. b.) Select breakfasts that have price lower than $7.00? Belgian Waffles $5.95 two of our famous Belgian Waffles with plenty of real maple syrup 650 Strawberry Belgian Waffles $7.95 light Belgian waffles covered with strawberries and whipped cream 900 Berry-Berry Belgian Waffles $8.95 light Belgian waffles covered with an assortment of fresh berries and whipped cream 900 French Toast $4.50 thick slices made from our homemade sourdough bread 600 Homestyle Breakfast $6.95 two eggs, bacon or sausage, toast, and our ever-popular hash browns 950

2144

What is the difference between a primary index and a secondary index? What is a duplicate data entry in an index? Can a primary index contain duplicates?

IBM,

5 32525

What is the differnce between Order by and Group by

1 4389

where do you use Isolations?give me some exmpale?

1 5260

In which year relase the 7.0& 2000 & 2005?

1 3761

wht r the base tables & primary key for BOM& WIP modules

Satyam,

1 5907

what is exact difference between drop and truncate table.

3 7220

Anybody can tell me, how do we find second largest emp salary from emp table.. Thanks in advance ...

Cognizant, ID, NTTF Nettur Technical Training Foundation, Sony, Verizon,

10 15418

Write an SQL query if u want to select the data from one block which intern reflects in another block ? thanx,do reply

Covansys,

1 6199

i have 4 tables.. T1, T2, T3, T4.. these tables have the same structure and they store the information entered in different years.. T1 stored 2002, T2 stored 2003, T3 stored 2004 and T4 stored 2005.. i want to copy contents in T1 to T2, T2 to T3, T3 to T4 and T4 to T1.. how do i do that? Temp tables cannot be used..

4 7747

Un-Answered Questions { Databases }

What is the optimal disk configuration for a database server and what raid configurations would you use if budget is not a constraint?

973

What is the difference between partition and index?

992

How we can get the current date in mysql?

957

How to enter comments in transact-sql statements?

944

What are the topics in pl sql?

971

How to change a value of the field ‘salary’ as 7500 for an employee_name ‘john’ in a table employee_details?

1438

Explain the advantages of couchdb?

Is stored procedure faster than query?

969

Types of Authentications in Sql Server? How user gets authenticated through windows authentication?

1052

What does currency type mean in database?

1197

How is mysql database stored?

1071

What does rownum mean in sql?

1024

Why are stored procedures used?

798

What is sql entity?

1105

What are types of indexes in sql?

1082

For More Un-Answered { Databases } Questions Click Here