- Data warehouse- a logical collection of information-gathered from many different operational databases-that supports business analysis activities and decision-making tasks.
- The primary purpose of a data warehouse is to aggregate information throughout an organization into a single repository for decision-making purpose.
Data Warehouse Fundamental.
- Extraction, transformation, and loading (ETL)- a process that extracts information from internal and external databases, transforms the information using a common set of enterprise definitions, and loads the information into a data warehouse.
- Data mart-contains a subsets of data warehouse information.
Multidimensional Analysis and Data Mining
- Databases contain information in a series of two-dimensional tables.
- In a data warehouse and data mart, information is multidimensional, it contains layers of columns and rows. -dimension-a particular attribute of information.
- Cube- common term for the reprensentation of multidimensional information.
- Data mining- the process of analyzing data to extract information not offered by the raw data alone.
- Data mining tool-uses a variety of techniques to find patterns and relationship in large volumes of information and infers rules that predict future behavior and guide decision making.
- -Information cleansing or scrubbing- a process that weeds out and fixes or discards inconsistent, incorrect or incomplete information.
- -Business intelligence-information that people use to support their descision-making effort.This principle enablers-technology, people, culture.
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