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Databases Interview Questions
Questions Answers Views Company eMail

how you will identify the mapping level bottleneck ? if there is a mapping level bottleneck then how will you try to improve the mapping

 1949

what is the out put of below queries? a. select * from Emp where null = null; b. select * from Emp where 1=1;

Patni,

13 24525

what are the joins,primary key,foriegn key, candidate key, super key and expain them?

Polaris,

6 17078

diff between DELETE and TRUNCATE?.

HCL, Yalamanchili Software,

14 22778

explain different types of jions with examples briefly?

Zensar,

1 6495

explain different types of jions with examples briefly?

Accenture, Excellence, Zensar,

2 8933

explain different types of jions with examples briefly?

Zensar,

3 10500

Q1:code to connect to sql server(database) through jdbc application. Q2:code to connect to Mysql(database) through jdbc application. Q3:code to connect to oracle(database) through jdbc application.

 1 4165

difference between oracle8i and oracle9i

NIIT,

4 10173

can we call functions from stored procedure in SQL Server 2005 ? How?

 3 11943

What is the difference between two queries: 1. SELECT * FROM table WHERE 1=1; 2. SELECT * FROM table

HP,

17 50044

what is the difference b/w oracle8i and oracle9i

iGate,

3 6469

What is the usage of NVL?

Infosys, Micro Infotek,

7 21217

We create an index to fast the search. How it fast the query? Do we write any special keyword with query?

 3 5744

SQL stops working in every 15 days displaying message that database log file is full. Log file size is 3.95 GB. It is happening after shrinking the database also. What is solution to overcome this problem. Please help me as it's urgent.

 5 8115

Un-Answered Questions { Databases }

What is pg pool?

863

What are the components of dbms?

967

What is the purpose of sql?

966

How to create a new table in a given schema?

1204

What is a php database?

896

What is mysql root?

971

How to lock and unlock a user account in oracle?

1123

What is transport network substrate (tns) in oracle?

1064

Explain oracle left join with an example?

1029

Why is sql*loader direct path so fast?

1116

How many sql are there?

1015

In mysql, what is the default storage engine?

1023

Difference between Sql server reporting services and Crystal reports?

172

What is difference between delete & truncate commands?

1102

What is tns service name?

1142

For More Un-Answered { Databases } Questions Click Here