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AIS system

1 Constantly checking the AIS system is very important due to various reasons, including the need to comply with laws and regulations, and business rules. For instance, an auto apportionment (allocation) method should be reviewed to ensure that the variables (eg. store space, volume, or cost drivers for activity-based costing) have not changed. Else, there will be incorrect allocation of overheads.

Will the above apply to database management systems?

2 Discuss some of the key considerations when designing a Payroll database system for a teaching hospital.

3 Does every database table require a primary key? Explain why or why not and provide an example to support your response.

4 Assume that you are developing REA diagrams for a large firm. Under what cases will it NOT make sense to combine REA diagrams?

5 Your posts indicate that REA modeling is beneficial. Why are firms reluctant to implement REA modeling concepts?

6 Is there a difference between an Activity and an Entity? Explain your response.

7 Using an academic organization as a model, describe an example of a MANY-to-MANY relationship.

8 Below is an example of the R, E, & A in the REA:
R: An example of a resource is ?Cash?.
E: ?Sales? or ?Purchases? is an example of an event.
A: An example of an agent is ?Customer? or ?Vendor?.
Class: Can you give more examples?

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