Download PDF by Rosemary Rock-Evans: A Simple Introduction to Data and Activity Analysis

By Rosemary Rock-Evans

ISBN-10: 1483184056

ISBN-13: 9781483184050

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Extra info for A Simple Introduction to Data and Activity Analysis

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Are all courses priced? 2. Is the course price applicable to more than one course? 3. Can the course price exist without a course? 4. Can a session be created independently of courses? ANSWER NO NO NO NO 52 A Simple Introduction to Data and Activity Analysis 5. Are all courses sequenced? 6. Is the sequence always one followed by many or one preceded by many? 7. Can a session be created by more than one consultant? 8. Can a session be allocated to more than one consultant? 9. Have all consultants been allocated sessions at one time or another?

Course 19. Course ? has r 20. r Course J Price in currency ? 32. 34. 4 Course Π Price in Currency Γ ? has Consultant teach ? ^ sequence ? ^ Teacher has requests/requested by ? 33 - > Course Price in Currency I sequence "^ Session L create W·"™ mmm% Course ϋ^ 1? 1? H ? Teacher _l ? 34 The next step we can show is the questions which we produce to fill in the missing details on the Model. Using the Data Model in Step 5, all we have to do is draw up a list as follows: I have put the answers a user might have given by the side and you can see the effect on the Model on the next page.

A user, for instance, often finds it helpful to give examples of what he means while he is explaining things to us. It is common for the examples to be clearer and more revealing than the classes he is attempting to explain, Example Most of our products are priced, but some aren't. Orders always use the current price, but other prices are quite useful - for example John Smith's Order No. 19254 asked for Gooey Choc Bars, but the order came in after we'd upped the price from 10p to 12p and as we'd agreed a price of 10p with him we charged him the 10p.

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A Simple Introduction to Data and Activity Analysis by Rosemary Rock-Evans


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