Modeling Concepts

InfoGrid Models are created from a small number of concepts. The most important ones are:

SubjectArea	Packaging concept to group related subjects.
EntityType	A possible type for a MeshObject.
RelationshipType	A possible type for a Relationship between two MeshObjects
PropertyType	Defines a possible Property of a MeshObject

Each PropertyType must have a DataType. The following DataTypes are available:

DataType	Corresponding instance type	Usage
BlobDataType	BlobValue	Binary value with a MIME type
BooleanDataType	BooleanValue	Boolean value
ColorDataType	ColorValue	Represents a color
CurrencyDataType	CurrencyValue	An amount of money in a specified currency
EnumeratedDataType	EnumeratedValue	Enumerated set of values
ExtentDataType	ExtentValue	An extent, captured by width and length
FloatDataType	FloatValue	Double-precision floating point with a possible range
IntegerDataType	IntegerValue	Integer with a possible range
MultiplicityDataType	MultiplicityValue	Multiplicity in a RelationshipType
PointDataType	PointValue	A point in a two-dimensional plane
StringDataType	StringValue	A string
TimePeriodDataType	TimePeriodValue	A period of time, aka duration
TimeStampDataType	TimeStampValue	A point in time