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entity-relationship diagram, ER-diagram, database ERD Entity-Relationship Diagram (ERD)

entity-relationship diagram, ER-diagram, database ERD
An Entity-Relationship Diagram (ERD) is a visual presentation of entities and relationships. That type of diagrams is often used in the semi-structured or unstructured data in databases and information systems. At first glance ERD is similar to a flowch

Use Case Diagrams technology with ConceptDraw PRO

UML Use Case Diagram Sample
Use case diagrams are used at the development of software and systems for definition of functional system requirements or system of systems. Use case diagram presents the consecution of object’s actions (user’s or system’s) which are executed for reaching the definite result.

block diagram, function blocks Block Diagrams

block diagram, function blocks
Block diagrams solution extends ConceptDraw PRO software with templates, samples and libraries of vector stencils for drawing the block diagrams.