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Essay specific features
Written by:
Kimberly D
Date added:
May 1, 2013
Level:
University
Grade:
A
No of pages / words:
10 / 2732
Was viewed:
4808 times
Rating of current essay:
Essay content:
This becomes vital input to defining the data structure needed in a system, and in particular it forms the basis of relational database design.
A relational database stores its data in a set of linked tables. These tables can be imagined as the sort of lists which you would develop on paper – each table comprising a group of columns (fields) with headings which name what is in each column...
displayed 300 characters
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Getting started
If you are asked to identify what data items a student results management system has to store, the first and most obvious thing is that it stores student results for units. Therefore we could start by saying that there is an entity called Student Result. Hence our initial idea of an E-R diagram would look like this:
[pic]
In theory, we could establish a system with this as the only entity – all the data we store could be classified as an attribute of the student result...
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