MOLAP architecture
Database server
MOLAP server architecture includes
Front tool architecture includes
MOLAP primarily reads precompiled data. MOLAP has limited capabilities to dynamically aggregate or evaluate results that are not already calculated and stored. In other words, applications such as financial analysis and budgeting that require the analysis of repetitive and comprehensive time series of trends are suitable for MOLAP technology.
Among the problems customers face is maintaining support for multiple subject areas in an RDBMS. which vendors can solve by continuing to access detailed data access and RDBMS issues from the MOLAP tool.
Which has a favorable and useful effect for organizations that need performance-sensitive multidimensional analyzes and data warehouse architectures that include several subject areas, have been built or are being built.
Benefits
A MOLAP cube is built for fast data retrieval, which provides excellent performance.
Since all evaluations are already created when the cube is created. Hence, complex computations are not only feasible, but also return quickly.
Disadvantages
Since all calculations are done when the cube is built, it is limited in information management.
Due to the specificity of cube technology, additional investments in human resources and capital are likely to be required to adopt MOLAP technology.
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The differences between MOLAP | POLAP | ROLAP
Hybrid OLAP Server (HOLAP)
HOLAP combines the best features of MOLAP and ROLAP into a single architecture. HOLAP systems store a significant amount of detailed data in relational tables, Microsoft SQL Server 2000 provides a hybrid OLAP server. For more information about Microsoft SQL Server, see the article What is Microsoft SQL Server? refer.)
Benefits of HOLAP
HOLAP can offer the advantages of MOLAP and ROLAP.
Provides quick access at all levels of aggregation architecture includes.
Balancing the required disk space, because it only stores the aggregate special database information in the OLAP server and the detail record remains in the relational database, so no duplicate copies of the detail record are kept.
Disadvantages of HOLAP
HOLAP architecture is very complex; Because it supports both MOLAP and ROLAP servers.
Other types
There are other types of OLAP styles that can be encounter from time to time. Here we introduce some of them:
OLAP server (WOLAP) with web capability
WOLAP is an OLAP program and is accessible through a web browser. Unlike traditional client/server OLAP applications, this server has a three-tier architecture and consists of three components: a client, a middleware, and a database server.
OLAP server (DOLAP)
It allows users to download a piece of data from a database or source and work with that dataset locally or on the desktop.
Mobile OLAP Server (MOLAP)
Enables users to access and work on OLAP data and applications remotely using their mobile devices.
Spatial OLAP Server (SOLAP)
SOLAP includes the capabilities of both geographic information setting up a telegram channel systems (GIS) and OLAP in one user interface and facilitates the management of spatial and non-spatial data.
And finally
OLAP is a system use to manage information data; And it is use by people such as managers, executives, analysts, etc. OLAP is a market-orient system that can handle large amounts of historical data and stores and manages data at various levels of detail. This information makes it easier ca cell numbers to use data in making inform decisions. And because of the large volume of OLAP data, they are store in multiple storage media. In this article, we introduced OLAP and explained its types and its advantages and disadvantages. We hope you enjoy reading this article. For more information, refer to Pooyan IT blog.