New PDF release: Advanced FileMaker Pro 5.5 techniques for developers

By Chris Moyer;Bob Bowers

ISBN-10: 1556228597

ISBN-13: 9781556228599

With greater than seven million clients world wide, FileMaker is without doubt one of the most well-liked database programs out there. yet in the past, there haven't been any books for FileMaker professional 5.5 builders that debate complex subject matters. complicated FileMaker professional 5.5 innovations for builders covers such issues as relational idea, defense implementations, audit trails, recursive relationships, complicated use of portals, and reporting. FileMaker experts Chris Moyer and Bob Bowers hide the basis talents, and extra, which are required for advanced FileMaker structures.

* find out how the relational version is applied in FileMaker seasoned.

* Use rollbacks to revive information.

* shield your database opposed to unauthorized entry.

* construct a safe login procedure to regulate consumer entry.

* observe the pliability and gear of portals.

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Extra info for Advanced FileMaker Pro 5.5 techniques for developers

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If you want to see a subset of all the rows in the table that meet some criteria, you would perform a find and get a found set. The found set is really a new table as perceived by you, the user. It is a row subset of the underlying table, and for viewing and printing purposes, it’s a table in its own right. In a similar fashion, layouts are used to restrict the number of columns in this virtual table, so they can be considered a column subsetting tool. The user’s various views (layouts) of the table are representations of temporary new tables that are distinct from the base table that actually contains the found set or layout that is being employed.

Each phone book may have hundreds of thousands of individual phone numbers in it, but since you’ve decided that that’s the smallest unit that you care about, then for the purposes of that domain, the phone book’s internal structure is irrelevant. You get to decide what an atomic value is. It may be a map or a short story or anything you want. In the example above, you could decide that since different states can have cities of the same name, and since you never need to deal with city and state information independently of each (in a report, for example), then it’s perfectly valid to designate a city-state pair as an atomic value.

Let’s revisit our trusty Invoice example and ponder this. If we had an invoice in FileMaker that had related line items in a portal, those line items would vanish if we changed the Invoice ID. We would have destroyed the referential integrity of the foreign key Invoice ID in the Line Item file. We have two options for maintaining that foreign key’s referential integrity: We can either disallow changes to a primary key when it’s referenced by some foreign key, or we can alter the foreign key so that it once again matches the primary key value.

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Advanced FileMaker Pro 5.5 techniques for developers by Chris Moyer;Bob Bowers

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