: Visual representations of how data moves through the system, from input to storage and output.
Logical definitions of user interfaces and external API integrations.
Breakdowns of core processes (e.g., "User Authentication Process," "Payment Logic").
A translates business requirements into a technical blueprint that focuses on what the system will do and how data flows, without getting bogged down in specific hardware or physical implementation details. Key Components of a Logical Design Document A standard LDD typically includes the following sections:
: Offers various Software Design Document Templates that include logical design sections.
: A high-level diagram showing the major functional modules and how they interact.