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Using foreign key on ER diagram?

Foreign keys isnt drawn at a ER-diagram. The relation drawn between entities is enough to show, that der is at foreign key


ER diagram of project online voting system?

a department employs many employees


What is an example of an ER diagram for an admission system?

An example of an ER diagram for an admission system could include entities such as Student, Course, Department, and Instructor. The Student entity would have attributes like student ID and name, while the Course entity would have attributes like course ID and title. Relationships would be established between entities, such as a student enrolling in a course, which would be represented by a many-to-many relationship between Student and Course entities. The ER diagram would visually represent these entities, attributes, and relationships to illustrate the structure of the admission system.


What are e r diagrams for online greeting cards website?

ER diagrams (Entity-Relationship diagrams) for an online greeting cards website illustrate the relationships between different entities involved in the system. Key entities might include Users, Cards, Categories, Orders, and Payments. For example, a User can create multiple Orders, each containing several Cards, which can be categorized into various Categories. The diagram helps visualize how these entities interact, ensuring a structured database design for efficient data management and retrieval.


What is an ER Diagram for a college system?

An ER diagram for a college system is an entity relationship diagram that is used to identify the entities of the college system and what those entities expect from the system. Examples of entities to include are students, financial aid, registers, and professors.