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

SQL PLSQL Interview Questions

Questions Answers Views Company eMail

Which is faster count (*) or count 1?

1024

Why use subqueries instead of joins?

1076

Which normal form is best?

948

Why are indexes and views important to an organization?

945

Which join is default?

948

What is before and after trigger?

950

Can I call a procedure inside a function?

1002

Which is better join or subquery?

1128

What is the difference between instead of trigger and after trigger?

999

Why we use cross join?

948

Why indexing is needed?

980

Why is normalization important?

1019

Which is faster subquery or join?

1205

Why do we need unique key in a table?

953

Which is the correct statement about truncate and delete?

1104

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Un-Answered Questions { SQL PLSQL }

What is a database? Explain

1103

What are the advantages of indexing?

980

What are the subsets of sql?

1121

Why functions are used in sql?

985

how to select first 5 records from a table? : Sql dba

972

Why is nosql good?

1018

What is output spooling in sql*plus?

1025

How can you load multi line records? : aql loader

1071

Whis is not false in primary key?

1450

How to use transactions efficiently : transact sql

1050

What is pl sql in dbms?

946

What is difference between db2 and sql?

996

How to run pl sql program in mysql?

1012

What is sql injection vulnerability?

939

What are the set operators in sql?

1066

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