Test Automation Framework: What is The Test Library Architecture Framework (including definition)

In the previous 2 posts on the subject of Test Automation Frameworks (Keyword Driven / Table Driven, Test Script Modularity), we have covered 2 of the models used for test automation frameworks. In this post, we will cover another test automation framework called 'Test Library Architecture'.
The Test Library Architecture is similar to the Test Script Modularity framework using the same level of abstraction; the difference being that the application being tested is broken down into functions and procedures (or you could break it down into objects and methods rather than scripts). The tester will need to create libraries (in the form of SQABasic libraries, APIs, DLLs, and such) that are supposed to be representing the modules, and functions of the application; once these are created, they are called directly from the test case script.
One of the advantages of this framework is that it provides a high degree of modularization, and increases the ease of maintenance of the automation test case. You can simply modify the script if a control is changed by modifying the library file.