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?

1038

Why use subqueries instead of joins?

1083

Which normal form is best?

953

Why are indexes and views important to an organization?

962

Which join is default?

959

What is before and after trigger?

964

Can I call a procedure inside a function?

1016

Which is better join or subquery?

1143

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

1015

Why we use cross join?

959

Why indexing is needed?

993

Why is normalization important?

1033

Which is faster subquery or join?

1228

Why do we need unique key in a table?

962

Which is the correct statement about truncate and delete?

1116

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Un-Answered Questions { SQL PLSQL }

What is the difference among union, minus and intersect?

1005

Is a secondary key the same as a foreign key?

1041

What can I use instead of union in sql?

971

what is the difference between union and union all? : Sql dba

1024

What is raid? How does it help storage of databases?

1088

What is a record in pl/sql?

1153

What is clustered index sql?

990

How do I order columns in sql?

1015

what is single byte over head in oracle..?

2408

List the various privileges that a user can grant to another user?

1047

Can we use ddl commands in pl sql?

1166

How to run sql statements through the web interface?

1048

what is offset-fetch filter in tsql? : Transact sql

955

What will you get by the cursor attribute sql%rowcount?

1044

What is the difference between function, procedure and package in pl/sql?

1268

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