potential customer has described the following scenario to you: We need to keep track of the data that our manufacturing firm needs to run smoothly. We make a number of products, each of which is manufactured by a different de- partment. Products are made up of a number of parts. Parts are bought from
A potential customer has described the following scenario to you:
We need to keep track of the data that our manufacturing firm needs to run smoothly.
We make a number of products, each of which is manufactured by a different de-
partment. Products are made up of a number of parts. Parts are bought from
suppliers.
You have been asked to perform a preliminary analysis of the scenario:
a) Identify four sets of values from the scenario.
b) Identify three relations from the scenario.
c) Draw an entity-relationship diagram to visualise the sets and relations you have identi-
fied.
d) Use the relations you identified in part b) to define the following:
i) A relation that records the parts that a department needs.
ii) A relation that records the suppliers that a department deals with
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