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Chapter 5  Database Processing
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                Figure 5-1
                A List of Student Grades
                Presented in a Spreadsheet
                Source: © Access 2013, Microsoft
                Corporation

                                               In fact, many professionals do keep track of things using spreadsheets. If the structure of the
                                            list is simple enough, there is no need to use database technology. The list of student grades in
                                            Figure 5-1, for example, works perfectly well in a spreadsheet.
                                               Suppose, however, that the professor wants to track  more than  just grades.  Say that the
                                              professor wants to record email messages as well. Or perhaps the professor wants to record both
                                            email messages and office visits. There is no place in Figure 5-1 to record that additional data. Of
                                            course, the professor could set up a separate spreadsheet for email messages and another one for
                                            office visits, but that awkward solution would be difficult to use because it does not provide all of
                                            the data in one place.
                                               Instead, the professor wants a form like that in Figure 5-2. With it, the professor can record
                                            student grades, emails, and office visits all in one place. A form like the one in Figure 5-2 is difficult,
                                            if not impossible, to produce from a spreadsheet. Such a form is easily produced, however, from a
                                            database.
                                               The key distinction between Figures 5-1 and 5-2 is that the data in Figure 5-1 is about a single
                                            theme or concept. It is about student grades only. The data in Figure 5-2 has multiple themes; it
                                            shows student grades, student emails, and student office visits. We can make a general rule from
                                            these examples: Lists of data involving a single theme can be stored in a spreadsheet; lists that
                                            involve data with multiple themes require a database. We will say more about this general rule as
                                            this chapter proceeds.



















                Figure 5-2
                Student Data Shown in a Form
                from a Database
                Source: © Access 2013, Microsoft
                Corporation
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