Answer Posted / renu kakkar
PRIMARY REPRESENTS THE ROW/TUPPLE UNIQUELY WHEREAS
SECONDARY KEY REPRESENTS THE SET OF TUPPLES
EMPLOY_ID IS A PRIMARY KEY AND EMPLOY_DEPTT. IS A SECONDARY
KEY.
| Is This Answer Correct ? | 3 Yes | 9 No |
Post New Answer View All Answers
Can one improve the performance of sql*loader? : aql loader
Which one is better subquery or joins?
What are the different types of triggers?
What is join view in sql?
Where is pl sql used?
explain primary keys and auto increment fields in mysql : sql dba
How do you update sql?
What is the difference between an inner and outer join?
What is pl sql collection?
What is bulk collect in pl sql?
Can a primary key be a foreign key?
Is sql a dbms?
What are different types of sql commands?
what is single byte over head in oracle..?
what is offset-fetch filter in tsql? : Transact sql