Logical

Intro

Logical refers to implementation-independent views of architecture. In EA, logical models remove physical constraints to clarify structure and behavior.

Key points:

• Separates design from specific technologies.
• Improves reusability and future-proofing.
• Common use cases across EA/BPM/Data/App/Tech include logical data models, application interaction maps, and process designs.
• Pitfall: skipping logical design and jumping straight to solutions.

Examples:

• Logical capability map independent of platforms.
• Logical process showing steps without system names.
• Logical data entities before choosing databases.

In practice:

Create logical models first, then derive physical designs to fit constraints and technology choices.

Related terms: Architecture; Physical; Architecture Principles

FAQs:

Q: Are logical models executable?
A: No; they describe structure and behavior without implementation details.

Q: When do we move to physical design?
A: After agreeing the logical model and evaluating constraints and options.

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