What is a data model, and why is its purpose? What is conceptual modeling? What do we need to use conceptual modeling? What are the functions of a DBMS? Provide an example of their use.

remolatg 2020-11-12 Answered
What is a data model, and why is its purpose? What is conceptual modeling? What do we need to use conceptual modeling? What are the functions of a DBMS? Provide an example of their use.
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irwchh
Answered 2020-11-13 Author has 102 answers
Step 1 Data model: Data modeling is a technique used to define and organize your business processes. It allows you to create a visual description of your business by examining, understanding, and clarifying your data requirements and how they underpin your business. It provides a clear picture of the base data and can be used by database developers to create a physical database. Conceptual modeling: A conceptual model is a description of a system, made of the composition of notions that are used to help people identify, understand, or simulate a subject the model represents. The three basic tenants of the Conceptual Data Model are Entity: A real-world thing Attribute: Characteristics or properties of an entity Relationship: Dependency or association between two entities Uses of Conceptual modeling: A conceptual models
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