what are views?

Answers were Sorted based on User's Feedback



what are views?..

Answer / pavan_1981

view is one type of database object which doesnt store any
data but fetches its data from the tables on which the view
is built.views can be of two types.one complex and other
simple.depending on type of te view different perations are
allowed on the views.
advatages:
1.views are secure because we can fetch the data from
different tables and present it to the user with cloumn
alias's so tha user wont know the actual column names or
table names.
2.instead of writing a huge join query which u most
frequently use everytime and executing it, we can create a
view using that query and just say for example "select *
from view".this inturn fetches the data u want from the
tables meeting ur requirements.
3.u can grant privilages to the user on the views instead
of giving privilages on the actual tables.this sometimes
help in security.
these are just few advantages to bgin with.still more exist.

Is This Answer Correct ?    19 Yes 0 No

what are views?..

Answer / annu rajput

View is a logical subset of the data.

it is not a physical storage for the data

it hides the logic through base table created.

it restrict the access to the data.

even it can make data readable.

Is This Answer Correct ?    3 Yes 0 No

what are views?..

Answer / akn

If we have several tables in a DB and we want to view only
specific columns from specific tables we can go for
views.It would also suffice the needs of security sometimes
allowing specific users to see only specific columns based
on the permission that we can configure on the view. Views
also reduce the effort that is required for writing queries
to access specific columns every time

Is This Answer Correct ?    6 Yes 5 No

what are views?..

Answer / raj dhar

View is a vertual table and it does not occupy the space.
And the types of views are:-
1)Simple View
2)Complex View
3)Force View
4)Inline View
5)Read Only View

Is This Answer Correct ?    1 Yes 0 No

what are views?..

Answer / amadur

If we have several tables in a DB and we want to view only
specific columns from specific tables we can go for
views.It would also suffice the needs of security sometimes
allowing specific users to see only specific columns based
on the permission that we can configure on the view. Views
also reduce the effort that is required for writing queries
to access specific columns every time

Is This Answer Correct ?    1 Yes 0 No

what are views?..

Answer / sudipta

It is a database object that is based on a select statement
against one or more tables or other view in the database.A
regular view dose not store any data in the database only
the definition is stored.views are also known as stored
queries.

Is This Answer Correct ?    0 Yes 0 No

what are views?..

Answer / rocky-455

View is logical representation of data. But it doesn't store data into tables

Is This Answer Correct ?    0 Yes 0 No

what are views?..

Answer / harsha vardhan reddy

1.It is a LOGICAL and VIRTUAL object.

2.It is stored select statement.

3.It allows DESCRIBE,DML,SELECT on it.

4.It will not hold data in it.

5.It supports to share "selected rows and columns with
other user"

6.It provides security while sharing.


regards,
harsha518@gmail.com
harsha.vardhan@cmcltd.com

Is This Answer Correct ?    1 Yes 3 No

Post New Answer

More Oracle General Interview Questions

How index is implemented in oracle database?

0 Answers  


Explain the relationship among Database, Tablespace and Data file?

4 Answers  


what are the default admin accounts in Oracle 10g ?

0 Answers   MCN Solutions,


What will be the syntax to find current date and time in format "yyyy-mm-dd"?

0 Answers  


How to create a single index for multiple columns?

0 Answers  






What is columnar storage what is the advantage?

0 Answers  


What is dynamic proxy?

0 Answers  


What is an Oracle sequence?

1 Answers  


Explain what are the uses of rollback segment?

0 Answers  


What is a heap related to database ?

1 Answers   TCS, University of Edinburgh,


How to start your 10g xe server from command line?

0 Answers  


What are the different types of partitions in oracle?

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)