Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / naresh
Cnadidate Key:
A Candidate Key (CK) is a column or group of columns that
uniquely describe every row in a table. The difficult thing
with this is that there may be exceptions in almost every
case. For instance, it is possible to have two people who
share the same name and birthdate but are really two
different people.
Super Key:
a superkey is a set of composite columns forming a key that
may be used to uniquely identify a row in a table
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is the difference between a primary key & a unique key?
Explain the difference between sap and oracle?
How do I recompile a procedure in oracle?
how to do daily transactions with out sql* loader control file regesterd in apps?
Explain about achiever in sql?
Can we save images in a database and if yes, how?
What happens if the imported table already exists?
How to write a query with an inner join in oracle?
What to do if the startbd.bat failed to start the xe instance?
How can Oracle users be audited?
If a parameter is used in a query without being previously defined, what diff. exist betw. report 2.0 and 2.5 when the query is applied ?
How to create a new user account in oracle?
What are the different types of database objects?
What are operators in oracle?
What is Undo Management Advisor in Oracle?
