Legal entity customer each of these types of customers have different attributes characteristics data and marketing objectives the legal entity customer data model focuses upon the legally defined or non human type of customer such as corporations companies partnerships and government organizations. Entity data model key concepts 03 30 2017 3 minutes to read contributors all in this article the entity data model edm uses three key concepts to describe the structure of data entity type association type and propertythese are the most important concepts in describing the structure of data in any implementation of the edm. The entity data model edm is a set of concepts that describe the structure of data regardless of its stored form the edm borrows from the entity relationship model described by peter chen in 1976 but it also builds on the entity relationship model and extends its traditional uses. A legal entity cannot have a parent of the same type a division can belong to multiple business units and a department can belong to multiple divisions in addition both a division and department can have a parent of the same type thus creating a hierarchy of these object types employee central data models march 1 simple theme . The entity data model edm is an extended version of the entity relationship model which specifies the conceptual model of the data using various modelling technique it also refers to a set of concepts that describe data structure regardless of its stored form edm supports a set of primitive
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