PhD Steven Roman's Access database design & programming: [what you really need PDF

By PhD Steven Roman

ISBN-10: 1565926269

ISBN-13: 9781565926264

Whereas distinct at intermediate Microsoft entry clients who're beginner programmers, this moment version of the bestselling entry Database layout & Programming may still attract all degrees of entry builders. specifically, the hot version includes:

    A dialogue of entry' new VBA built-in improvement surroundings utilized by notice, Excel, and PowerPoint

    Expanded insurance of the VBA language itself, in keeping with reader requests

    Discussions of Microsoft's newest info entry know-how, known as energetic facts items (or ADO), and Open Database Connectivity (ODBC), that's in detail attached with ADO

For amateur programmers, this publication specializes in quite often overlooked, yet however crucial, wisdom for constructing potent database functions. Its remedy of database layout and queries provides intermediate and complex builders a consolidated resource of information, whereas its programming chapters represent a convenient connection with easy operations that may be played utilizing DAO or the entry item version.

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Error message due to dangling reference 6. Click the OK button, reopen the BOOKS table, and fix the offending entry (change the PubID field for Hamlet back to 2). Then close the BOOKS table and reestablish the relationship between PUBLISHERS and BOOKS. This time, check the Enforce Referential Integrity checkbox as well as the Cascade Update Related Fields checkbox. Do not check Cascade Delete Related Fields. 7. Next, drag the ISBN attribute name from the BOOKS table scheme to the ISBN attribute name in the BOOK/AUTHOR table scheme.

The point is that, by breaking data into separate tables, we must often go to the trouble of piecing the data back together in order to get a comprehensive view of those data. Thus, we can state the following important maxim: As a direct consequence of good database design, we often need to use methods for piecing data from several tables into a single coherent form. Many database applications provide the user with relatively easy ways to create comprehensive views of data from many tables. For instance, Microsoft Access provides a graphical interface to create queries for that purpose.

5. 5. Relationship between the PUBLISHERS and BOOKS table 4. This window shows the relationship between PUBLISHERS and BOOKS, listing the key {PubID} in Publishers and the foreign key {PubID} in Books. ) 5. Now check the Enforce Referential Integrity box and click the Create button. 6. The problem is, of course, the dangling reference that we created by changing the PubID field in the BOOKS table to refer to a nonexistent publisher. 6. Error message due to dangling reference 6. Click the OK button, reopen the BOOKS table, and fix the offending entry (change the PubID field for Hamlet back to 2).

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Access database design & programming: [what you really need to know to develop with access] by PhD Steven Roman


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