Managing application logic

Domain Model Pattern

Core Idea: Represents real-world entities and their relationships as objects in the application.

Benefits:

• Encapsulates business logic within objects, promoting reusability and maintainability.
• Provides a natural mapping to the problem domain, improving understanding.
• Supports complex object-oriented interactions.

Drawbacks:

• Can be more complex to implement, especially for large-scale applications.
• May require additional infrastructure, such as object-relational mappers (ORMs).

Use Cases:

• Applications with rich domain logic and complex relationships between entities.
• When a high degree of object-oriented modeling is desired.

Table Module Pattern

Core Idea: Organizes code around database tables, with each module responsible for operations on a specific table.

Benefits:

• Simple and straightforward to implement.
• Often aligns well with the relational database schema.
• Can be effective for smaller applications or when the domain logic is relatively simple.

Drawbacks:

• Can lead to tightly coupled code and reduced reusability.
• May not effectively model complex business rules.

Use Cases:

• Smaller applications with a simpler domain.
• When performance is a critical concern and database access is optimized.

Transaction Script Pattern

Core Idea:

• Represents a transaction as a single unit of work, encapsulating the logic and data access required to complete the transaction.

Benefits:

• Easy to understand and implement.
• Can be effective for simple CRUD (Create, Read, Update, Delete) operations.
• Provides a clear separation of concerns between presentation and data access.

Drawbacks:

• Can lead to duplication of code for similar transactions.
• May not be suitable for complex business logic or large-scale applications.

Use Cases:

• Small to medium-sized applications with relatively simple business rules.
• When performance is a critical concern and transaction boundaries are well-defined.