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I need an explanation for this Economics question to help me study.
A small medical office needs a database system designed. The design starts with a 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., staff, patients, suppliers, carriers, 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 patient can’t schedule more than one appointment 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 – Nurse
Attributes: Employee ID (Primary Key), Name, Address, DOB, SSN, License Number.
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