What is a Conceptual Data Model?
A Conceptual Data Model is a diagram identifying the business concepts (entities) and the relationships between these concepts in order to gain, reflect, and document understanding of the organization’s business, from a data perspective. It shows how the business world sees information. It suppresses non-critical details in order to emphasize business rules and user objects. It typically includes only significant entities which have business meaning, along with their relationships. – Applied Information Science website A Conceptual Data Model usually takes the form of an Entity Relationship Diagram (ERD) or Object Role Model (ORM). The Conceptual Data Model typically does not contain attributes, or if it does only significant attributes. The Conceptual Data Model is technology and application independent. The Conceptual Data Model should reflect relationships from a historical, longitudinal perspective. For example, a relationship between Store and Employee may usually be considered a
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