2. Design a ER diagram and a relational schema for a messageboard. Facts 1. Mess

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2. Design a ER diagram and a relational schema for a messageboard. Facts 1. Message board (or category) 2. Messages 3. Message replies 4. Topics 5. Topic replies 6. Topic watch 7. Users Note: 1. A message must belong to one topic 2. A message board may belong to another message board 3. A topic must belong to one message board 4. A topic can have one or more messages 5. A user can send and receive a message 6. A user can create a topic 7. A user can request a topic watch on a specific topic 8. A user should have identifying features 2. Design a ER diagram and a relational schema for a messageboard. Facts 1. Message board (or category) 2. Messages 3. Message replies 4. Topics 5. Topic replies 6. Topic watch 7. Users Note: 1. A message must belong to one topic 2. A message board may belong to another message board 3. A topic must belong to one message board 4. A topic can have one or more messages 5. A user can send and receive a message 6. A user can create a topic 7. A user can request a topic watch on a specific topic 8. A user should have identifying features

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