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Meridian News publishes a daily newspaper and would like a database developed to maintain information about subscribers and subscriptions. Each subscriber is uniquely identified by a subscriber number and is also characterized by first name, last name, address, and phone number. Each subscription is uniquely identified by a subscription number and is also characterized by subscription type (Daily or Sunday only), price, start date, and expiration date. The price paid for a subscription is input when the subscription is sold, since it may vary due to special offers or situations. Expired subscriptions and former subscribers that no longer have a current subscription remain in the database.

The example report below shows the subscriptions belonging to subscriber number 31893.

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1. Identify the entities discussed in the case?

2. What is the minimum number of current subscriptions for a subscriber?

3. What is the maximum number of subscriptions for a subscriber?

4. Using the Crow's Foot model, draw an ERD for the Meridian News database and state any assumptions you believe you have to make in order to develop a complete diagram.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M91621172
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