Concepts and Architecture - what is the differnece between materialized view and snapshot

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what is the differnece between materialized view and snapshot

A materialized view is a replica of a target master from a singlepoint in time. The concept was first introduced with Oracle7 termed asSNAPSHOT. In Oracle release 7.1.6 snapshots were enhanced to enableDMLs along with a new terminology, updatable snapshots. With Oracle8.1.6 snapshots started to be used in data warehouse environments so anew terminology materialized view was introduced to address bothdistributed and data warehouse materialized views.

Total Answers and Comments: 3

Last Update: April 24, 2008

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Submitted by: rajat dey

hi,There is no difference only thing is that in oracle 7x it is called snapshot but 8i onwards it is called materialized view.

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rnraomaddula, shymon_krishnan

February 21, 2006 03:22:12

rajat dey

RE: what is the differnece between materialized view a...

hi There is no difference only thing is that in oracle 7x it is called snapshot but 8i onwards it is called materialized view.

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September 25, 2006 03:51:42

pravin Karde

RE: sir i urgently needs the "Architecture of Materialized view & its working operation"

sir i m a M.E. student & i developed a project on Materialized view selection & maintenance.sir for this i urgently need the architecture of Materialized view & its operation. sir pl. help me & send me if possible.

thanks waiting +vely.

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April 24, 2008 13:52:08

irfanyell

Member Since: April 2008 Contribution: 4

RE: what is the differnece between materialized view and snapshot

Both are mirror copy of tables but in that main difference is in snapshot we cannot edit the data. in the case of materialized view we can edit the data.

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