How to restrict the duplicate records in table valuesets

Answers were Sorted based on User's Feedback



How to restrict the duplicate records in table valuesets..

Answer / znaukak

Create unique key for this column where value should be
inserted.

Is This Answer Correct ?    12 Yes 1 No

How to restrict the duplicate records in table valuesets..

Answer / shalini gupta

we can create a unique index as well as primary key
constrains to restrict dulpicate record. unique key allows
one null but primary key constrains does not allow null.

Is This Answer Correct ?    4 Yes 2 No

Post New Answer

More Oracle General Interview Questions

What is connection pool in oracle?

0 Answers  


We need to compare two successive records of a table based on a field. For example, if the table is CUSTOMER, and the filed is Account_ID, To compare Account_IDs of record1 and record2 of CUSTOMER table, what can be the query ?

3 Answers  


How many memory layers are in the shared pool?

1 Answers  


When can Hash Cluster used ?

1 Answers  


 How to use an oracle sequence generator in a mapping?

0 Answers   Informatica,






How to omit columns with default values in insert statement in oracle?

0 Answers  


What is PL/SQL ?

0 Answers  


How to use existing values in update statements using oracle?

0 Answers  


Why do we use bulk collect in oracle?

0 Answers  


various types of hints and their usage

0 Answers  


How to convert csv to table in oracle?

0 Answers  


Is there any function in oracle similar like group_concat of mysql?

0 Answers  


Categories
  • Oracle General Interview Questions Oracle General (1789)
  • Oracle DBA (Database Administration) Interview Questions Oracle DBA (Database Administration) (261)
  • Oracle Call Interface (OCI) Interview Questions Oracle Call Interface (OCI) (10)
  • Oracle Architecture Interview Questions Oracle Architecture (90)
  • Oracle Security Interview Questions Oracle Security (38)
  • Oracle Forms Reports Interview Questions Oracle Forms Reports (510)
  • Oracle Data Integrator (ODI) Interview Questions Oracle Data Integrator (ODI) (120)
  • Oracle ETL Interview Questions Oracle ETL (15)
  • Oracle RAC Interview Questions Oracle RAC (93)
  • Oracle D2K Interview Questions Oracle D2K (72)
  • Oracle AllOther Interview Questions Oracle AllOther (241)