Answer / guru

View: View is a virtual table, a query attached to it.
Actually it have not Stored query results. It will execute
and returns rows.

A materialized view is a database object that contains the
results of a query. They are local copies of data located
remotely, or are used to create summary tables based on
aggregations of a table's data. Materialized views, which
store data based on remote tables are also, know as
snapshots.A materialized view can query tables, views, and
other materialized views. Collectively these are called
master tables (a replication term) or detail tables (a data
warehouse term)

Answer / rahul khanke

views : this are the vertiual table.. views dosent stores
the data.. if we update the table then updation is in
actual table..
M view : this are the tables based on one or more tables..
this stores the data.. updation is done then actual
updation is in M. view itself..

Answer / a.jyothsna

VIEWS: Takes the output of a query
M.VIEWS: Stores the output of a query,Views can't store
the results of a query

Answer / pinkey

A view is just a stored query and has no physical part.
Once a view is instantiated, performance can be quite good,
until it is aged out of the cache. A materialized view has
a physical table associated with it; it doesn't have to
resolve the query each time it is queried. Depending on how
large a result set and how complex the query, a
materialized view should perform better.

Answer / naresh

View: - it is logical table,it doesn't contain any data,it's contain only select statement.
if you modify the data in view,it's immediately effect to the Base table.
it gets rowids same as the base table.
Materialized view: - M.V are mostly use in Data Marts.

What is the basic structure of an sql?

0 Answers  

How do I remove sql plus from windows 10?

0 Answers  

write a procedure to find top second no from a list of numbers

1 Answers   ABC,

What are expressions?

0 Answers  

What is a scalar value in sql?

0 Answers  

I have a tablle like this: cust acc ----------- a 1 b 2 b 3 c 4 c 5 c 6 I Want below o/p: cust acc --------------- a 1 b 2|3 c 4|5|6 Please any one can you have any ideas share me. I have urgent requirement.

7 Answers   MTS,

What is dynamic sql in pl sql?

0 Answers  

When is the explicit cursor used ?

0 Answers  

How do you get all records from 2 tables. Which join do you use?

8 Answers   Microsoft,

how does a local variable is defined using t-sql? : Transact sql

0 Answers  

What is not equal in sql?

0 Answers  

what are the type of locks ? : Sql dba

0 Answers