One of the best features of the OpenERP framework is that we can extend OpenERP and write our own modules without having to modify any of the OpenERP source code. Instead, the changes we make are all contained in their own directory and within their own files.
The primary advantage to this point is that when OpenERP modifies their source code with patches or bug fixes, we do not have to worry about our changes getting overwritten. Also, while we may still need to modify our code if OpenERP makes a dramatic change to their source code, there is a reasonable chance the changes required will be minimal.
Tip
Like in other areas of OpenERP development, make frequent backups of your databases. Some of the examples we will show make changes to the database that can be difficult to undo.
Each module in OpenERP has basic requirements for it to be properly recognized by the OpenERP framework and installed. Once we successfully install our module, the framework will then...