Entity Relation Map Diagram
Diagram explaining relation between entities.
%%{ init: { 'theme': 'neutral' } }%% erDiagram abernathy["A. B. Abernathy"] { Position Factor "Connecting Factor" Action Orchestrator } doug["D. Matthews"] { Position Fireman "County Fire Chief" Action PrimaryActor "Thug and Relative of Abernathy" } matt["M. Dayton"] { Position Executor "Neighbors Son" Action Conspirator "Fully knew what would happen" } dayton["W.E. Dayton"] { Position Neighbor Action None "Ailment gave Opportunity" } josh["J. Sappington"] { CoPosition RuralWaterAssoc "Head of the Rural Water Association" Position Realtor "Realtor at Team One" Action Misinformed } tylers["E. Tyler && R. Simmons"] { Position Developer "Transfored rural to suburban" Action Destroy "Abernathy's Thugs" } Anita["A. Buice"] { Position Zoning "County Zoning Administrator" Action Enabler "Refused to enforce the law, Violated the law" } jeanie["J. Haddock"] { Position Assessor "County Tax Assessor" Action CoverUp "Online Property Tax Records" } scott["S. Mayfield"] { Position CoAttorney "Current County Attorney" Action Lawlessness "Primary Conspirator" } ryran["R. Traylor"] { Position CommissionChair "Chairman of the County Commissioners" Action Enabler "Aware of Everything, Did Nothing..." } abernathy }|--o{ doug : Lead tylers ||--|{ abernathy : Recruited doug }|..|o matt : Coerced doug |o--o{ tylers : Alliance matt }|--|{ dayton : Represented abernathy ||--|{ josh : CoverUp abernathy ||..|| jeanie : Influenced abernathy }|--|{ ryran : CoverUp scott }|--|{ ryran : Coverup jeanie |o--o{ Anita : Influenced doug }o--o| scott : Involved
Note
The above diagram is called an entity relationship map, it displays the relational inter-dependency between two or more entities.
Basically, it is a graphical means of displaying the strength of the relationship between two entities. We use the term “entities”, because other things can and do possess relationships to one another. Such as fuel to cars, or apples to apple tress. The diagram also describes whether the relationship is mandatory or not, meaning whether one can exist without the other. When applied to human relationships, the later would describe whether another individual’s involvement would have occurred without the other’s involvement.
Type | Relation |
---|---|
Solid | Directly related |
Dash | Indirectly related |
Descriptor | zero or one | one or many | optional or mandatory |
---|---|---|---|
ring and dash | zero | one | optional |
dash and dash | one | one | mandatory |
ring and crow | zero | many | optional |
dash and crow | one | many | mandatory |