"primary key=unique+null" is equal,reson?not,reason?
Answer Posted / prashant
Primary Key = unique + Not null
Because primary key is used to uniquely identify each row
of the table.
Is This Answer Correct ? | 9 Yes | 0 No |
Post New Answer View All Answers
ABOUT IDENTITY?
I am using an Oracle 8i Database my data contains Clob data. I am using toad version 7.6 i am able to get the data in toad but unable to extract the data in excel.when trying to extract the data into the excel the toad error says out of memory. Can any body please help me to extract the data through the same toad version. Thanks in advance
How to convert numbers to characters in oracle?
What is materialized view in Oracle?
How to define an oracle sub procedure?
Can any one explain me when i execute below query.. select months_between('07-JUL-12','10-FEB-12') from dual; Out put:- 4.90322581 How oracle calculate?
Explain the use of record option in exp command.
Explain view?
What privilege is needed for a user to create views in oracle?
Database is hung. Old and new user connections alike hang on impact. What do you do? Your SYS SQLPLUS session IS able to connect.
How to list all tables in your schema?
I creat Credit memo in AR. Now i want revers the Credit Memo.how you can revers that what out any aditional entry.
can u plz provide me oca sql dumps please i need them
Which environment variables are absolutely critical in order to run the OUI?
What is a sub query? Describe its types?