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Joshua Mason

Joshua Mason. CH 1 Problems/Exorcises 1,6,7. Problem 1. For each of the following entities in a university, indicate whether there is a one-to-many or a many-to-many relationship. Draw a diagram for each. Many-to-Many. Registers. Course. Student. One-to-Many. Copied. Book Copy. Book.

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Joshua Mason

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  1. Joshua Mason CH 1 Problems/Exorcises 1,6,7

  2. Problem 1 • For each of the following entities in a university, indicate whether there is a one-to-many or a many-to-many relationship. Draw a diagram for each. • Many-to-Many Registers Course Student • One-to-Many Copied Book Copy Book • One-to-Many Split-up Section Course • One-to-Many Assigned Room Section • Many-to-Many Teaches Course Instructor

  3. Problem 6 • Consider a student club or organization in which you are a member. What are the data entities of this enterprise? List and define each entity. Then develop an enterprise data model showing these entities and important relationships between them. Examines Pass/Fail Medical Assigned PT test Soldier Unit Teaches Classes Qualifies Qual Checklist

  4. Problem 7 • a) The individual is responsible for the individual database • b) The workstation should only involve taking information from the server to avoid data conflicts and the changing of data should happen on the server. • c) Security to protect against unauthorized disclosure can be accomplished by only allowing certain groups of people to have access to certain parts of the database. • d) They can maintain standards by using correct programs that force different formats and be very clear about definitions. • e) They have to have database support and universal access to the data. If all components have these they can have a shared understanding of the database.

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