what is difference between table and view? where to use views?
thanks in advance!



what is difference between table and view? where to use views? thanks in advance!..

Answer / shalini

A table is a collection of data in the form of rows and
columns.
Whereas a View is a virtual table in which data comes from
one or more base tables and is stored as a result of a
predefined query for further use.
Uses of Views:
1.used to improve performance as they are the results of
predefined/complex queries which can be used in other
queries.
2.To provide security by granting permissions to certain
group of people only on the views rather than all the
tables database .ie. hiding sensitive data.
3.To hide complexity of data by showing only the relevant
data need to show to a user rather than confusing a uaser
by showing all the information

Is This Answer Correct ?    11 Yes 0 No

Post New Answer

More Oracle General Interview Questions

SQLERRM is a a. Constraint b. Pre Defined Exception c. Pseduocolumn d. Constant e. None of Above.

2 Answers   Cognizant,


What is the minimum client footprint required to connect c# to an oracle database?

0 Answers  


Which dictionary tables and/or views would you look at to diagnose a locking issue?

0 Answers  


How would you edit your CRONTAB to schedule the running of /test/test.sh to run every other day at 2PM?

0 Answers  


What is mean by Program Global Area (PGA) ?

9 Answers   Bajaj,






how to use select statement as formal parameter in procedure specification?(someone said that using string) ex:-procedure(a in number,select ename from emp ) i am asking syntax like this?

0 Answers   Sierra Atlantica,


How to name query output columns in oracle?

0 Answers  


Can a formula column referred to columns in higher group ?

0 Answers   Oracle,


How to load a large xml file?

0 Answers  


Suppose U install the oracle DB either enterprise edition or express edition in ur personal PC, Is there the Database has been created after ur installation if not then where the oracle's all objects with data be stored?

1 Answers   IBM,


How to call a stored function in oracle?

0 Answers  


I have a table called 'test' on source and target with same name, structure and data type but in a different column order. How can you setup replication for this table?

0 Answers   Oracle,


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)