Can a table have no primary key?


No Answer is Posted For this Question
Be the First to Post Answer

Post New Answer

More SQL PLSQL Interview Questions

Interchange the value of a column Gender in a table where values are Male and Female. So, where the value is Male, it should changed to Female and Female to Male.

4 Answers   Cap Gemini, IBM,


Is left join same as join?

0 Answers  


table name: prod there are three fields in the table that are 1.proddate 2.prodQty 3.model Day wise prodQty is stored in the table prod write a query to display total prodqty in the year 2004 april.

2 Answers   Maruti Suzuki,


explain the difference between myisam static and myisam dynamic. : Sql dba

0 Answers  


Can we use ddl commands in pl sql?

0 Answers  






how to insert the records in particular position

1 Answers  


how to concatenate two character strings? : Sql dba

0 Answers  


Do we need to create index on primary key?

0 Answers  


1. how to use the check option constraints in sql query..? 2.how to add data in a complex query ? 3.is it possible to use commit or rollback or savepoint in triggers...if not why please explain with examples...? 4.what is the difference between meterialized view and normal view..how to create materialized view and how to use it..? 5.what is varray...? what is the advantage of the varray ? please expalin with a simpel example..i want to load into a table (student no and name and his marks..) please give example.. 6.what are the bulk bind exceptions...how to use bulk bind and how to use bulk collect..please explain with example... 7.what is for update of and where current of ...? 8 what is the use of nowait ? 9.please give an example for nocopy in a simple plsql query 10.create an index in a table...tellme how to use the index in a where clause to do performance tunning...

3 Answers   Satyam,


Who is the owner of mysql database?

0 Answers  


How does rowid help in running a query faster?

0 Answers  


Can we use the cursor's to create the collection in PL/SQL?

0 Answers   MCN Solutions,


Categories