Automated Definition of Data Warehouse Star Schemas

摘要

An automated system for defining a star schema for a data source. The system based on automatically gathered information from the data source such as entities and columns, entity column types and lengths, entity keys, relationships between and within entities, measures, workflow and correlated attributes, specialized entities, an update frequency of entities and columns, and grouping of entity and column updates associated with the source database automatically determines facts, dimensions, dimension hierarchies, measures, workflow specific measures (if data source has workflows) and workflow correlated attribute specific measures (if data source has temporal, priority, ownership and progress tracking attributes) to come up with a star schema for the data source.