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April 2009 - Posts

Saturday, April 25, 2009 2:50 PM

Modeling Hierarchies (Part 2)

In the last article I gave the theoretical background to using mapping to model complex hierarchies. In this article I will work through an example that is intended to illustrate how the use of the mapping approach can solve some of the key issues associated
posted by andykr | 5 Comments
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Attachment(s): ripdemo.zip
Saturday, April 18, 2009 1:21 PM

Modeling Hierarchies (Part 1)

As a computer users, we deal with hierarchies every day and working with relational data involves hierarchical relationships of varying degrees of complexity from the simple parent-child-grandchild (e.g. Customer -> Order -> Item) to very complex
posted by andykr | 2 Comments
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Saturday, April 11, 2009 3:39 PM

NODEFAULT, DODEFAULT() and Scope Resolution [::]

A recent thread on Foxite highlighted, once again, the confusion that surrounds this little group of commands and functions. The help file isn't exactly helpful either, so let's start with the definition of NODEFAULT from there: NODEFAULT Prevents Visual
posted by andykr | 3 Comments
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Saturday, April 04, 2009 1:58 PM

Controlling Controls in VFP (Part 2: CommandButtons)

In the last article I showed a methodology that enables controls to react to changes in a form level property by altering their appearance. In this article I want to look at another aspect of controlling how things happen in a VFP  application –
posted by andykr | 0 Comments
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