Un-Answered Questions { Oracle General }

Explain about the analyze command in oracle?

573


Difference between cartesian join and cross join?

534


Point the difference between translate and replace?

562


What are the major difference between truncate and delete?

509


What is a sub query? Describe its types?

532


What is the difference between count (*), count (expression), count (distinct expression)?

547


Point out the difference between user tables and data dictionary?

534


What do you mean by merge in oracle and how can you merge two tables?

513


Difference between the “verify” and “feedback” command?

759


What do you mean by merge in oracle?

587


Describe an oracle table?

565


What are the differences between primary key and unique key?

507


What is the difference between substr and instr?

511


Describe varray?

576


How can you merge two tables in oracle?

559