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EXISTING SYSTEM

PROPOSED SYSTEM

EXISTING CONCEPT:-

Most of the existing work for bringing together OLAP and SW technologies focuses on schema design issues. But our analysis work still unresolved challenges. The common characteristic of the existing approaches is that these can deal with unstructured data.

A first challenge involves the automatic derivation of such mappings. Research on other, but related fields, like schema mappings and data exchange has provided very useful results that have not been exploited yet by research on DW design.

PROPOSED CONCEPT:-

We propose a series of criteria that aims to capture the main aspects of emerging DW/OLAP systems. The criteria aim to reflect the main components of a traditional DW/OLAP system, and how these components are evolving to cover the new requirements posed by the new scenarios.

The resulting categorization schema aims to identify the commonalities and differences of emerging approaches in terms of the changes they propose with respect to the traditional components of DW/OLAP system.

EXISTING TECHNIQUE:-

OLAP/SW

PROPOSED TECHNIQUE:-

OLAP/DW

TECHNIQUE DEFNITION:-

SW technology is aimed at providing the necessary representation languages and tools to express semantic based Meta data.

TECHNIQUE DEFNITION:-

OLAP technology is aimed at gathering, transforming and summarizing available data from existing sources to generate analytical information suitable for decision-making tasks.

DRAWBACKS:-

In analysis work still unresolved challenges.

The ontology mapping is provided.

ADVANTAGES:-

In propose criteria to identify and solved challenges.

The orthogonal process is provided.