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

By Chris Moyer;Bob Bowers

With greater than seven million clients around the globe, FileMaker is likely one of the most well-liked database applications out there. yet before, there haven't been any books for FileMaker professional 5.5 builders that debate complex themes. complex FileMaker seasoned 5.5 options for builders covers such subject matters as relational concept, defense implementations, audit trails, recursive relationships, complicated use of portals, and reporting. FileMaker specialists Chris Moyer and Bob Bowers disguise the root talents, and extra, which are required for advanced FileMaker structures.

* find out how the relational version is carried out in FileMaker professional.

* Use rollbacks to revive info.

* guard your database opposed to unauthorized entry.

* construct a safe login approach to manage consumer entry.

* become aware of the flexibleness and gear of portals.

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FileMaker’s specific support of column subsetting in its layout capabilities qualifies as a project operator. While this isn’t technically an operator, in practice it is a project operation. It’s kind of like sculpting data. Think of it: FileMaker layout development as data sculpture. 41 Chapter 2 underlying base table. When you exit the layout, you destroy that derived table. These are novel ways of thinking about working with FileMaker, but they really make sense in terms of the relational model and thus a relational system.

These two options are known as restricted update and cascading update, respectively. It’s beyond the scope of this chapter to describe how to implement these features in FileMaker Pro, but the next chapter will cover the techniques for implementing these features in full detail. 32 The Relational Model Chapter 1 NOTE Updating even part of a compound primary key is equivalent to updating the entire key. Because a primary key consists of a set (possibly a set containing only one attribute, but more than one attribute if we’re talking about a compound primary key), changing the value of any member of the set changes the value of the set itself.

If a tuple exists, it’s in the relation. For practical purposes and given the functionality of current relational database products, the rule is that candidate keys cannot contain nulls. By the way, we refer to all relational database products and not just FileMaker Pro because FileMaker’s ODBC capability means that it can exchange data with other relational systems. Since FileMaker is no longer an island, issues that affect all relational database systems also need to be taken into consideration by FileMaker developers.

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