Summary

System Modeling

• System modeling is the process of creating abstract representations of a system to understand, analyze, and design it effectively.
• It helps in visualizing the structure, behavior, and interactions of a system, making it easier to communicate ideas and identify potential issues.

Information System Modeling Types

To model an information system, we can use different types of models based on the focus and perspective:

• Function-Driven/Procedure-Centered
  • Data-Flow Diagram
• Data-Driven
  • Entity-Relationship Diagram
• Object-Oriented
  • Static Model
    • Class Diagram
  • Dynamic Model
    • State Diagram
    • Sequence Diagram

Methodology

A methodology defines the instructions, guidelines, and heuristics used in a particular area of activity

• Modeling Language
• Modeling Process