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DBM405 (Database Management System)
Facilitator Anup Majumder-University of Phoenix Online
Abstract
The research that I have done for this individual assignment where I need to provide a
brief explanation of OLAP, Data Warehouse and Data Mart, Three-tier architecture and
ASP was through a research online. I found that most of these acronyms for computer
terminology are hard to find when the meanings that apply to your subject or acronym you
are un-aware of it. In conclusion all the above words are related one to each other.
Let me start this paper providing a shot briefing about how hard was for me finding most
of the explanation of these four terminologies that I will be explaining below.
OLAP is the first word that I will define in my paper. OLAP is an acronym for On-Line
Analytical Processing. It is an approach to quickly providing the answer to complex
database queries. Is used in today business for reporting sales, marketing, management
reporting, data mining and similar areas.
The main reason of using OLAP to answer queries is speed. Relational databases store
entities in discrete tables if they have been properly normalized. This structure is good for
operational databases but for complex multi-table queries is comparatively slow. A better
model for querying but worse for operational use is the dimensional database.
OLAP take a snapshot of a relational database and restructures it into dimensional data.
The queries can ten be run against this. It has been claimed that for complex queries OLAP
can produce a result in around 0.1% of the time for the same query on relational data.
