Download e-book for iPad: A Simple Introduction to Data and Activity Analysis by Rosemary Rock-Evans

By Rosemary Rock-Evans

ISBN-10: 1483184056

ISBN-13: 9781483184050

An easy advent to information and job research

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Extra info for A Simple Introduction to Data and Activity Analysis

Example text

Address No. of Students Account No. Address No. 20 Example 4 - Step 1 INVOICE Date of Invoice Invoice No. 21 Example 4 - Step 3 How to do Data Analysis COURSE GIVING INVOICE Invoice No. Date of Invoice Amount Charged Date Payable Currency Course Name Start Date End Date 43 COMPANY No. of 1 Students Co. Name A/c No. 22 Example 4 - Step 4 Course Giving Invoice Invoice Date of Invoice Invoice No. Amount Charged Currency Date Payable Course Giving Course Name Start Date End Date No. of Students Company Company Name Account No.

NO THE FORMER NO NO NO IN TIME, YES NO YES YES YES A COMPANY BECOMES A CLIENT WHEN IT REQUESTS A COURSE Is it possible for courses to exist without having been requested? NO Can a teacher teach many courses? YES YES Do all teachers teach? SOME NOT, NOT WHEN Are all courses taught? THEY'RE BEING CREATED YES Can a course have more than one teacher? 35. allocated to Course Price in Currency has jh. 35 Final Model after Questions Summary Analysing text is the most difficult method of analysis but, assuming your user is easily available it is the quickest way of building a Data Model.

Remember that forms and record layouts provide an easily accessible detailed source of data on the existing system. When analysing forms and record layouts, you usually find only one-to-one and one-to-many relationships (we have seen the one exception) and the one-to-one relationships may prove later to be incorrect. Furthermore, without any actual values to help us it is difficult to see dependencies between data items, particularly during step 4. No optionality layouts. can be deduced from forms and record Disadvantages There is a danger that Entities may be missed if no data items are present on the form.

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

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