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Dimensional Modeling Part 2-Data Warehouse-Lecture Slides, Slides of Data Warehousing

Baddi University of Emerging Sciences and TechnologiesData Warehousing

Topics include in this course are Data Warehousing Concepts, Design and Development, Extraction, Transformation and Loading, OLAP Technology, Data Mining Techniques: Classification, Clustering and Decision Tree, Advanced Topics. This lecture includes: Dimensional, Modeling, Development, Phases, Requirement, Gathering, Information, Packages, Star, Schema, Analysis

Typology: Slides

2011/2012

Uploaded on 08/08/2012

sharib_sweet
sharib_sweet 🇮🇳

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DW Development Phases
Requirement Gathering and Dimensional Analysis
Information Packages
Dimensional Modeling
Star Schema
Contents
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Contents DW Development Phases Requirement Gathering and Dimensional Analysis Information Packages Dimensional Modeling Star Schema

DW Development Phases

Requirements to Data Design

Business Dimensions

Dimensional Nature of Business Data

Information Packagerolling up in our analysis Paths for drilling down or

Information Package:

Automaker Sales docsity.com

Dimensional Modeling 1. Find data entities from information package2. Find data structures (tables) for representingthese entities3. Find the relationship among data structures

Data Entities Measurements or metrics Business dimensions Attributes (Hierarchies/Categories) for eachbusiness dimension

Formation of Fact Table

Formation of Dimension Tables

STAR Schema

Example: Order Analysis