Modeling a Graphical Expression of Materials Data (GEMD)
model-memo
The things of concern1 are materials, processes, measurements, and ingredients. Materials are output by processes and are subject to measurements. A process may take materials as ingredients.
Things are recorded in three ways: as templates, as specs, and as runs. You can record a template for a thing – what might be the case. You can also record a spec for a thing – what is intended. Finally, you can record a run for a thing – what is, or was.
Each thing can have attributes from three categories: properties, parameters, and conditions. A property is something measured or calculated. A parameter is something set. A condition describes an aspect of the thing’s environment.
model-diagram
model-formalism
[
{
"@base": "terminusdb:///data/",
"@schema": "terminusdb:///schema#",
"@type": "@context"
},
{
"@id": "Thing",
"@type": "Class",
"@abstract": [],
"has": {
"@type": "Set",
"@class": "Attribute"
}
},
{
"@id": "Process",
"@type": "Class",
"@inherits": ["Thing"],
"outputs": "Material",
"hasInput": {
"@type": "Set",
"@class": "Ingredient"
}
},
{
"@id": "Material",
"@type": "Class",
"@inherits": ["Thing"],
"subjectTo": {
"@type": "Set",
"@class": "Measurement"
}
},
{
"@id": "Measurement",
"@type": "Class",
"@inherits": ["Thing"]
},
{
"@id": "Ingredient",
"@type": "Class",
"@inherits": ["Thing"],
"from": "Material"
},
{
"@id": "Attribute",
"@type": "Class",
"@abstract": []
},
{
"@id": "Property",
"@type": "Class",
"@inherits": ["Attribute"]
},
{
"@id": "Parameter",
"@type": "Class",
"@inherits": ["Attribute"]
},
{
"@id": "Condition",
"@type": "Class",
"@inherits": ["Attribute"]
},
{
"@id": "Record",
"@type": "Class",
"@abstract": [],
"about": "Thing"
},
{
"@id": "Template",
"@type": "Class",
"@inherits": ["Record"]
},
{
"@id": "Spec",
"@type": "Class",
"@inherits": ["Record"]
},
{
"@id": "Run",
"@type": "Class",
"@inherits": ["Record"]
}
]