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Business Intelligence using OLAPASSIST. PROF. DR. ANANTAKUL INTARAPADUNG
Agenda
History of the relational database? BI using OLAP
OLAP by MS-Excel
History of the relational database?
Difficulty in reporting from relational database
Instant reporting using OLAP
How an OLAP cube works
MDX (Multi-dimensional expressions
OLTP & OLAP
OLTP ( Create, Insert, Update, Delete) OLAP(Report, Dashboard)+ (Select & Read Only)
Two board type of database activity
OLTP - Online Transaction Processing
Short transaction
Simple queries
Touch small portion of data
Frequent updates
OLAP- Online Analytical Processing
Long transaction
Complex queries
Touch large portion of the data
Infrequent updates
More terminology
Star Schema
Fact table
Updated frequently, very large
Sales transaction, course enrollment
Dimension tables
Stores, items, customer
Students, course
Web pages ,user, advertisers
Reference
[1] ExcelCentral.com (2015), What is Business Intelligence and an OLAP Cube? [Online] Available: http://excelcentral.com. Retrieved June 16,2015
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