why we use materialized view over view?



why we use materialized view over view?..

Answer / abhinaw prakash

When we issue Select * from View it'll fetch the data from
the Base table were as with Materialized view when we issue
select * from Materialized view it ll fetch the data from
the materialized view.

Also with using materialized view we can escape the run time
joins that it ll have to do when retrieving for a query.

Also with View you cannot schedule it for refresh but with
MV we can schedule it for Refresh

Is This Answer Correct ?    3 Yes 0 No

Post New Answer

More Informatica Interview Questions

In warehouses how many schemas are there?

0 Answers  


Explain about Recovering sessions?

1 Answers  


explain about informatica server architecture?

1 Answers   IBM,


Briefly explain the aggregator transformation?

0 Answers  


what is confirmed dimension?

6 Answers  






What are the basic needs to join two sources in a source qualifier?

4 Answers  


What is decode in informatica?

0 Answers  


Can we use Union Transformation for Heterogeneous sources? i.e; 3 sources, 1 from Oracle, 2nd from Informix, 3rd from Sql Server with same metadata?

3 Answers   TCS,


What if we sort the data in descending order instead of increasing order in sorter t/f and send the data in aggregator t/f is there any performance downfall? Please answer below. thank you.

4 Answers   JPMorgan Chase,


what is runtime variable?

3 Answers   TCS,


How is Source Side push down optimization different to just providing a SQL override in Source qualifier transformation.

0 Answers  


Can anyone please help me out,In which transformations records will be rejected and how capture those records?and How to reload the rejected records?

3 Answers   Syntel,


Categories