Creational Design Patterns in Modern C++ - Using the Factory Method

The video tutorial discusses the limitations of using macros and conditional statements for creating database instances, leading to tightly coupled and inflexible code. It introduces the factory method design pattern to decouple the client code from specific database classes. The implementation of the factory method is detailed, highlighting its benefits in creating instances without depending on concrete types. However, the method's limitation in ensuring consistent database instances is noted. To address this, the abstract factory design pattern is introduced, which allows for creating instances from a specific database set, ensuring consistency and flexibility.

What problem arises when a new database is introduced in the application?

Explain the factory method design pattern and its purpose in the context of the lecture.

What limitation does the factory method have regarding the database instances it returns?

How can the abstract factory design pattern improve upon the limitations of the factory method?

What are the potential issues with mixing classes from different databases when using multiple factories?

What is the significance of having a common factory for both SQL and MySQL?

Describe the process of creating instances of database classes using the abstract factory.