Entity Relationship data diagrams

ADAMO uses a form of the Entity-Relationship model and allows data to be represented as a diagram. +------------------------------------------------------+ | +-----------+ +-----------+ | ER diagram, | | Track | | Cluster | | | |-----------| |-----------| | boxes are sets | | P | | RC | | of similar objects, | | Theta | | FC | | above is the | | Phi | | Energy | | object name, | | DP | -|------|->>| DEnergy | | below are listed | | DTheta | | | | the attributes. | | DPhi | +-----------+ | Arrows are | | Rhit | ^ | relationships. | | Fhit | ^ | | +-----------+ | | The arrow with | -+- | | double head from | | -+- | Track to Vertex | | | | means that there | V +-----------+ | can be more than | V | Cell | | one track per | +----------+ |-----------| | Vertex, but only | | Vertex | |*Rank | | a Vertex for each | |----------| |*File | | track. The bar on | | X | |Energy | | the Track side | | Y | +-----------+ | allows for Tracks | | Z | | not associated | +----------+ | with any Vertex. +------------------------------------------------------+