Answer / harshakore

A view has a logical existence but a materialized view has
a physical existence.Moreover a materialized view can be
indexed,analysed and so on....that is all the things that
we can do with a table can also be done with a materialized
view.

Answer / senthil

hi,
we already know basic restrictions of view and materialized
view,

view is a logical or virtual table it doesn't have data on
its own, but materialized view has a physical structure it
stores data in local machine or on its own.materialized view
can be refreshed automatically or manually. but in view, if
any changes happened in the base tables, we want to reflect
the same in the view means view has to issue the select
statement again to the database

Answer / anju

A materialized view is a stored summary containing pre-
computed results.As the data is pre-computed, materialized
views allow for faster query answers

In warehousing applications, large amounts of data are
processed and similar queries are frequently repeated. If
these queries are pre-computed and the results stored in
the data warehouse as a materialized view, using
materialized views significantly improves performance
by providing fast lookups into the set of results.

A Materialized View generally behaves like a Index and it
can also have any Number of Aggregates and Joins.

Answer / papa

Materialized View caches the data,but view cannt store the
data all.

Answer / navas

View:It is a sql query which is executed and populates
results each time when the particular view is accessed.When
we make a DML statement in view it will affect the original
data available in datebase table.
Materialized view:Materialized view is similar to a table
that exists in the table space.The resultsets are fetched
and populated in materialized view from various table when
a meterialixed view is created and will be availabe until
the view is refreshed.

Answer / roshan

apart from all the above answer one more difference is:
suppose we delete a table then all the views becomes invalid but this is not the case with the materialized view. its most interesting feature is auto commit refresh...

Answer / surajit n bhowmick

A View is just a stored query and has no physical role.
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 does not have to resolve the query each time it is
queried. Depending on how large the result and how complex
the query, a materialized view should perform better.

Answer / manohara reddy

view is logic and virtual table. it does't hold data.it
allows DML Operations.when ever u update or insert in base
table or view automatically changed those.
materialized view is static. u want create m.view DBA
Privileges and permissions must. it hold data all. when ever
u update or create rows in base table , it update only
update base table. doesn't change.

Answer / tiklu

Materialized Views are used by men with Tiny Penis
Where are Views are for Women with loose Vagina

Answer / the tiklu

Materialized View is for Consumerist es, while Views
are for great men and sexy women.

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