Object-Oriented Decision Support System
نویسندگان
چکیده
We develop a decision support system, based on the data warehousing approach. We define a conceptual object-oriented data warehouse model, which describes the data warehouse as a central repository of relevant, complex and temporal data. Our model integrates three concepts: warehouse object, environment and warehouse class. Each warehouse object representing a source entity, is composed of one current state, several past states (modelling its detailed evolutions) and several archive states (modelling its evolutions within a summarised form). The environment concept defines temporal parts in a data warehouse schema with significant granularities (attribute, class, sub graph). We also provide seven functions that are used to define warehouse classes.
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