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The following data is to be used in developing a new database system for a ficti

ID: 2659109 • Letter: T

Question

The following data is to be used in developing a new database system for a fictitious company:

Design a set of relational tables to store this data. Do all of the data items need to be stored in a table? If not, which ones do not need to be stored, and why not? Identify what data should be included in each table.

The following data is to be used in developing a new database system for a fictitious company: Customer name Customer address Date of purchase Amount of purchase Item purchased Quantity purchased Salesperson Invoice number Item number Design a set of relational tables to store this data. Do all of the data items need to be stored in a table? If not, which ones do not need to be stored, and why not? Identify what data should be included in each table.

Explanation / Answer

CUSTOMER TABLE

Customer Name

Customer Address

Date of Purchaase

Amount of Purchase


STOCK TABLE

Invoice NO.

Item Purchased

Quantity Purchased


SALE DETAIL

Invoice no.

Sales Person

Item no.


INVOICE No. is present in all the tables so that relationship can be established among each tables. Another reason is that Invoice no. are always unique.


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