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Extra info for A Simple Introduction to Data and Activity Analysis
That was most helpful. Thank you for your time. May I come back and just verify Fve understood correctly? Sure, bye bye. SAMPLE SOLUTION Step 1 1. Company 'X' has a number of courses 2. Courses are requested by a client or company 3. Company 'Χ' has teachers 4. Teachers are all consultants 5. Teachers create courses 6. Company requests course (sort of course = course) 7. Sessions are on a course 8. [Sessions are worked out in outline] 9. Sessions are allocated to consultants 10. Consultants create sessions 11.
Has been given, will be given, but be sure to write all the tenses on the relationship line. They will be resolved later. 40. How to do Data Analysis Entity y Entity x X J Ί. 38 55 56 A Simple Introduction to Data and Activity Analysis Occurrences DATA MODEL hs X Only some occurrences 'have' other occurrences. \ / Entity x Only some occurrences 'are had by' another occurrence. (? Each occurrence is both 'had' and 'had by' another occurrence. u v J impossible Only some occurrences have and are had by another occurrence.
7 SUMMARY There are three main concepts used in Data Analysis - the Entity, Attribute and the Relationship. 36. 1 INTRODUCTION This chapter shows you how to get the Data Analysis deliverables - the Data Model and all the related information from a number of well defined "inputs". These inputs are those you would expect to get from the collection task (interviews, observation, meetings, study of existing documentation). They fall into four main types :* * * * Real world abstractions/classes Real world occurrences/things Design abstractions/classes Design occurrences/things Real World Abstractions and Real World Occurrences When a user talks about his existing system or we read policy documents, explanatory books or similar sorts of business type literature we often find that the business is being described in 'conceptual' terms and at either the abstract or 'occurrence' levels.