what is mean by prmary key and foreign key and how can we
diffrentiate that?
Please answer me.
Advance thanks.

Answer Posted / harish

LET ME TELL IN SINGLE SENTENCE!!! :)
"ALL FOREIGN KEYS ARE PRIMARY KEYS BUT NOT VICE-VERSA"

Is This Answer Correct ?    7 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Can multiple columns be used in group by in oracle?

553


How many types of synonyms in Oracle?

607


Explain the dml?

604


How to add a new column to an existing table with a default value?

553


How many anonymous blocks can be defined?

596






What is the difference between postgresql and oracle?

519


How would you change old and new values in an insert, delete and update triggers?

547


How to check database size in Oracle?

648


How to put more than 1000 values into an oracle in clause?

590


How to use "while" statements in oracle?

746


What are the system predefined user roles?

593


What is oracle open database communication (odbc)?

565


How many types of database triggers exist?

588


What is integrity and what is constraint??Explain with example

1707


What is an index associated with a constraint?

558