ERD Symbols and Meanings

Crow's foot notation is used in Barker's Notation, Structured Systems Analysis and Design Method (SSADM) and information engineering. Crow's foot diagrams represent entities as boxes, and relationships as lines between the boxes. Different shapes at the ends of these lines represent the cardinality of the relationship.
The Chen's ERD notation is still used and is considered to present a more detailed way of representing entities and relationships.
To create an ERD, software engineers mainly turn to dedicated drawing software, which contain the full notation resources for their specific database design - ERD symbols and meanings. CS Odessa has released an all-inclusive Entity-Relationship Diagram (ERD) solution for their powerful drawing program, ConceptDraw DIAGRAM.

Data modeling with ConceptDraw DIAGRAM

Data modelling will help you to study and analyze business processes in your organization for optimization and increase of effectiveness and production.

IDEF1 standard

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

IDEF9 Standard

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