Whatis the difference between View and Materialized View ?

Answer Posted / 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.

Is This Answer Correct ?    37 Yes 6 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is a rank transform?

676


waht type of interface is used for testing the data in informatica

1834


What are the different transaction levels available in transaction control transformation?

679


What is the main purpose of Unconnected lookup other than updating slowly changing dimensions? or In which case u use Unconnected lookup?

6417


How will the document be delivered to me?

621






Slowly changing dimensions, types and where will you use them

1276


What is a difference between complete, stop and abort?

642


What is the difference between Active and Passive transformation?

637


is it possible to index the data in cache of lkp transformation ?

1528


What is source qualifier transformation in informatica?

575


How many ways a relational source definition can be updated and what are they?

583


Can we override a native sql query within informatica?

632


What is the need of an ETL tool?

644


suppose in my source flatfile i have 10000 records in that some of master table records missed table records missed then what will u do

1735


can anyone suggest best free Talend data integration training online

1263