E-R Diagram, Answer the Following Questions: * Essay

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E-R diagram, answer the following questions:

* a. How many EMPLOYEES can work on a project?

It is not limited.

What is the degree of the Used_on relationship?

Binary, the relationship is two degrees.

* c. Do any associative entities appear in this diagram? If so, name them.

Yes, Task is an associative entity.

* d. How else could the attribute Skill be modeled?

It could be modeled with Task, another blue square could be attached to Task

* e. What attributes might be attached to the Works on relationship?

The different positions of the project; it could include the jobs and requirements.

* f. Could TOOL be modeled as an associative entity? Why or why not?

No, different tools could be used on different tasks. Some jobs might require different combinations of tools to complete the task.

16. The owner of two pizza parlors located in adjacent towns wants to computerize and integrate sales transactions and inventory management within and between both stores. The point-of-sale component must be easy to use and flexible enough to accommodate a variety of pricing strategies and coupons.

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The inventory management, which will be linked to the point-of-sale component, must also be easy to use and fast. The systems at each store need to be linked so that sales and inventory levels can be determined instantly for each store and for both stores combined. The owner can allocate $40,000 for hardware and $20,000 for software and must have the new system operational in three months. Training must be short and easy. Briefly describe three alternative systems for this situation and explain how each would meet the requirements and constraints. Are the requirements and constraints realistic? Why or why not?

Option 1

The first option would be the low cost method. This option would most likely be significantly under the price limit. Furthermore, this option would also be completed well before the three-month limit and the training time would also be short. However, the performance and capabilities would not be as comprehensive and the system would not be able to….....

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