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A small college needs a database system designed. The design starts with e visualized conceptualization carried by an entity-relationship diagram (ERD). Create this ERD by completing the following steps:
Identify all involved in the database system so your ERD accurately “captures” the entire process, actors, and relationships (e.g., faculty, students, staff, courses, facilities, etc.
Identify and list entities and attributes for each entity.
Make sure you designate an attribute to serve as a primary key per each entity. Explain why that attribute “deserves” to be designated a primary key.
Briefly define business rules. (Example: One instructor can’t teach more than one class at a time.)
It is important that you have a clear understanding of key concepts such as entity, attribute, primary key, foreign key, referential integrity, relationships, ERD, etc., before starting to work on the assignment.
Example:
Entity – Room
Attributes: Room Number (Primary Key), Capacity, Building, Accessibility, etc.
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