Differentiate pl/sql and sql?
What are the datatypes available in pl/sql ?
What has stored procedures in sql?
Difference between NVL, NVL2 and NULLIF
What is plpgsql language?
What is database white box testing and black box testing?
What is optimistic concurrency control? : Transact sql
What are sql*plus environment variables?
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...
What is the difference between execution of triggers and stored procedures?
How to get list of all tables from a database?
How to maintain the history of code changes of pl/sql?
What is the diffrence between IN and EXISTS.which one is faster.