Databases Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Databases Interview Questions

Questions Answers Views Company eMail

Diff. b/w Full Outer Join And Cross Join?

3 7606

What is Self Join?

4 6757

what is data abstraction

Semantic Space,

3 7265

What is mutating trigger?How to avoid it??

Tech Mahindra,

3 14148

How will you fine tune a stored procedure or what are the steps that should be taken to fine tune or optimize a stored procedure?

Logitech, Mphasis,

1 16704

How do you invoke datastage using unix?

3 7032

What would be the Expected Salary For SQL Server Developer for 3 years exp. as per indian market?

7 12558

how to take mysql database structure backup

6 11194

How do you start MySQL on Linux?

Cybernet,

5 8246

How to get max 100 values from sql server

7 13659

What are the factors you will check for the performane optimization for a database query?

CarrizalSoft Technologies, DELL, SoftSol,

7 12015

IS it possible to built the oracle database without setting the kernal parameters?

EDS,

1 2417

I am using SQL Server 2005, I have some select and update statements in my query with WHERE clause I want to prevent these queries from SQL injection attacks. What are the steps and precautions to be taken for SQL Injection attacks? Does anybody have suggestions? Thanks in advance,

2 5225

write a query to find out the no. of employees whose age is less than 25 and max of salary for the employees belonging to a particular department is less than 20000

6 22876

I know that i can create a table without a primary key.But is there any significance for that table???? while creating an application.

6 8649

Un-Answered Questions { Databases }

what is bcp? When does it used? : Sql dba

1051

Is inner join faster than left join?

1271

This question asked during interview, 2) At the end of each month, a new table is created for each bank that contains monthly metrics consolidated at the account level. The table naming convention is bankX_YYYYMM where X represents the numeric designation of the bank and YYYYMM indicates the 4 digit year and 2 digit month. The tables contain the following fields: name data type description account text account number registered boolean indicates whether the account is registered num_trans integer number of transactions made during the time period spend numeric(9,2) total spend during the time period a) Write a SQL query that will display the total number of transactions and total spend for "Bank1" during the 4th quarter of 2009. b) Write a SQL query that will display the total number of transactions and total spend at "Bank1" and "Bank2", broken out by registered vs. non-registered accounts, during January 2010 not sure what is correct answer and how to solve?

2553

Please send me Informatica 8.1 certification dumps, my mail id mona85gupta@gmail.com

1939

Have you written applications to retrieve stored images in a table?

1082

What are different types of constraints?

995

What kind of problems occurs if we do not implement proper locking strategy?

1490

What is standby servers? Explain types of standby servers.

1067

what are the advantages of sql ? : Sql dba

1136

How can we solve concurrency problems?

1116

Any work done in oracle workflow builder. Did you customize or build a new workflow?

How efficient you are in oracle and SQL server?

1249

Is there any performance difference between if exists (select null from table) and if exists (select 1 from table)?

1021

What is a view in sql?

1035

How do I create a trace in sql server?

1109

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