This document discusses various object-oriented design patterns that can be applied to a kindergarten enrollment subsystem, including:
1. The Builder pattern is used to separate object construction from representation.
2. The Adapter pattern allows unrelated interfaces to work together by supporting multiple compatibility.
3. The Facade pattern hides complexities and only displays necessary functions to simplify the user interface.
4. The Chain of Responsibility pattern facilitates communication between objects without tight coupling, distributing responsibilities flexibly between objects.