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A Process Flow Diagram (PFD) is a visual map that illustrates the relationships between major components in a system and the sequence of steps in a workflow. Learn how PFDs clarify business logic and identify bottlenecks.
A lifeline is the visual element that represents time and the existence of an object in a sequence diagram. Learn how it organizes messages chronologically in software architecture.
An Entity Relationship Diagram (ERD) is the visual blueprint of a database structure. Learn how ERDs use entities, attributes, and relationships to map out complex data models.