RELATIONAL DATA ANALYSIS
In the previous section, we saw one approach to the development of a conceptual data model. This was typical of the approach that might be taken when there is no formal documentation of the requirements that are to be met. The model is developed by the analyst as a result of information about the business data requirements gathered through interviews, workshops or observation of working practices.
There is another, much more formal approach to the analysis of data requirements that relies on there being some document or other existing record (such as a program file) that lists the items of data that are to be recorded. This set of data items is then analysed using this process, which is known as relational data analysis. ...
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