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  •    Online Analytical Processing Server (OLAP) is based on multidimensional data model.
  •     It allows the managers, analysts to get insight the information through fast, consistent, interactive access to information.


    Four types of OLAP servers that are

  • Relational OLAP(ROLAP)

The Relational OLAP servers are placed between relational back-end server and client front-end tools. To store and manage warehouse data the Relational OLAP use relational or extended-relational DBMS.

  • Multidimensional OLAP (MOLAP)

Multidimensional OLAP (MOLAP) uses the array-based multidimensional storage engines for multidimensional views of data. With multidimensional data stores, the storage utilization may be low if the data set is sparse. Therefore many MOLAP Server uses the two level of data storage representation to handle dense and sparse data sets.


  • Hybrid OLAP (HOLAP)

The hybrid OLAP technique combination of ROLAP and MOLAP both. It has both the higher scalability of ROLAP and faster computation of MOLAP. HOLAP server allows storing the large data volumes of detail data. The aggregations are stored separated in MOLAP store.


  • Specialized SQL Servers

specialized SQL servers provides advanced query language and query processing support for SQL queries over star and snowflake schemas in a read-only environment.

Postped by Vissicomp Technology Pvt Ltd

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