what is the difference between primary key & foreign key?
- 57 Answers
- 122275 Views
- CTS, Infosys, La Multi, Sparsh, Wipro, I also Faced
- E-Mail Answers
Answer Posted / shree
foreign key is NULL
foreign key reference as Primary key in another table
Primary key is unique
primary key is not NULL and
| Is This Answer Correct ? | 46 Yes | 12 No |
Post New Answer View All Answers
What spfile/init.ora file parameter exists to force the CBO to make the execution path of a given statement use an index, even if the index scan may appear to be calculated as more costly?
What are the extensions used by oracle reports?
What is the difference between translate and replace?
What is materialized view in Oracle?
How to list all indexes in your schema?
What are the ansi data types supported in oracle?
How to drop a stored procedure in oracle?
how the indexes are stored in the Oracle Database?
What is parameterized cursor in oracle?
What happens to indexes if you drop a table?
How to define a cusotmer as a supplier in ORACLE R12
What is the difference between pre-select and pre-query?
What is a private synonym?
How to add a new column to an existing table in oracle?
How to change program global area (pga) in oracle?
