Abstract: A code generator utilizes a “generated_source” directory to store corresponding machine-generated software code. A “modified_source” directory stores user-written modifications associated with software generated by the code generator. During code generation, the code generator checks the modified_source directory for a class presently being generated by the code generator. If there are no user modifications (stored in the modified_source directory) associated with the class being processed, the code generator creates an implementation of the class. If the modified_source directory contains an implementation of the class being processed, the code generator creates an implementation of a base class for the class being processed. The base class is created in the generated_source directory, preserving the class created by the user.

Abstract: Application code maintenance often imposes rebuilding and/or a patch kit update from a source code vendor. Users of such applications often find such conventional rebuilds and install efforts intrusive. An extensible object-relational (O-R) model operable for dynamic additions to an existing baseline of modeled data specifications mitigates interim patches and builds by employing a scripted modeling form and a corresponding relational form. The scripted modeling form, such as an XML file, is readily modifiable from existing data specifications, such as those driven by a recognized standard, while the relational form is seamlessly updated within an existing application environment without requiring rebuilding or patch kits to implement. The extensible O-R model defines data characteristics of data specifications, and the relational model is updated by instantiating an object or entry into the modeled relational specifications based on the extensible O-R model.