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