A producer wants to know…. Which are our lowest/highest margin customers ? Who are my customers and what products are they buying? What is the most effective.

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Presentation transcript:

A producer wants to know…. Which are our lowest/highest margin customers ? Who are my customers and what products are they buying? What is the most effective distribution channel? What product prom- -otions have the biggest impact on revenue? What impact will new products/services have on revenue and margins? What impact will new products/services have on revenue and margins? Which customers are most likely to go to the competition ?

Data, Data everywhere yet... I can’t find the data I need data is scattered over the network many versions, subtle differences I can’t get the data I need need an expert to get the data I can’t understand the data I found available data poorly documented I can’t use the data I found results are unexpected data needs to be transformed from one form to other

What is a Data Warehouse? A single, complete and consistent store of data obtained from a variety of different sources made available to end users in a what they can understand and use in a business context. A process of transforming data into information and making it available to users in a timely enough manner to make a difference

The need for Data Warehousing TWO MAJOR FACTORS: 1. A business requires an integrated, companywide view of high quality information. 2. The information systems department must separate informational from operational systems in order to dramatically improve performance in managing company data.

Client Warehouse Source Query & Analysis Integration Metadata Data Warehouse Architecture

From the Data Warehouse to Data Marts Departmentally Structured Individually Structured Data Warehouse Organizationally Structured Less More History Normalized Detailed Data Information

CHARACTERISTICS OF DATA WAREHOUSE DATA SUBJECT ORIENTED: Data organized by subject INTEGRATED: Consistency of defining parameters NON-VOLATILE: Stable data storage medium TIME-VARIANT: Timeless of data and access terms

RECONCILED DATA LAYER…. Is the third layer in a three-layer architecture that materializes operational data obtained after integrating and cleansing source data. Characteristics of a reconciled data Detailed Historical Normalized Comprehensive Quality controlled

DATA TRANSFORMATION…. Is the process of converting a set of data values from the data format of a source data system into the data format of a destination data system. The ETL Process