Singleton Design Pattern
March 7th, 2007, by Paul Lefebvre in General, Source Code
The Singleton design pattern is probably the simplest of all the common design patterns. Its purpose is also simple: to ensure that only once instance of a class is ever instantiated. You might be thinking that you could just use a module for this purpose. A module is close to a singleton, but since...

Databases 103: Creating Tables and Data
March 1st, 2007, by Paul Lefebvre in Databases
Let’s take the entities we created last time and turn them into tables. Once we do this we’ll create these tables in a REALbasic database using SQL. Mapping entities to tables is fairly straightforward. Typically each entity becomes a table and each attribute becomes a column. You may have...