IDEF1 standard

Use Case Diagrams technology. Using visual graphical objects IDEF1 standard allows to model information interrelations.

Basic Network Diagram

A perfect tool to draw basic computer network diagrams, designs, schematics, and network maps. Numerous stencils and templates.

IDEF9 Standard

Use Case Diagrams technology. An effective management of changes is significantly facilitated by way of definition and documenting of business-requirements.