First, I model the data, and the relationships between the data. Sometimes I'll use an editor like Umbrello, or simply sketch some UML on some paper. Other times I'll just hack Class::Tangram classes directly (as Class::Tangram has quite direct correspondance to most UML data model forms).

Once I've got this model (represented as Class::Tangram classes), I'll write test cases for each class that tests any "special" actions that the object needs to do, for instance, password encryption and authentication on a User object.

The next stages really depend on what the application is doing. Sometimes the next stage will be to plug the classes into a Tangram::Schema, so that I can save them to a database. Sometimes the database plays a more direct part in the planning stage, if there is an existing data form I need to represent and map to.

I find that once the data model is good, writing the actual program is just a matter of joining the dots... which of course can often take a lot longer than you think ;-). 

$h=$ENV{HOME};my@q=split/\n\n/,`cat $h/.quotes`;$s="$h/."
."signature";$t=`cat $s`;print$t,"\n",$q[rand($#q)],"\n";

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In reply to Model the data first by mugwumpjism
in thread How do you program (again)? by wazoox

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