A schema comprises a number of components that work together to define your data, including:
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Class definition - A named description of a set of objects that play similar roles and share some of the same properties and relationships.
For example, an object that is an instance of an organization may play one or more of the following roles: internal organization, external organization, supplier, manufacturer, or contractor.
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Interface definition - A collection of properties available to an object that, as a set, represent the role an object plays. Interface definitions also represent the ends of relationship definitions.
Each role is represented by a different interface definition that exposes properties and supports relationships specific to that role.
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Relationship definition - A definition of how objects can be related to each other.
For example, a relationship definition describes the relationship that can exist between an organization and a contract. The relationship definition can include information such as how many organizations each contract can be related to and what happens to an organization when a contract is deleted.
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Property definition - Attributes that describe objects. Properties are related to a class definition through an interface definition.
For more information about the SDx schema, see HxGN SDx Schema Overview.
For more information about rule and restrictions for creating and editing the data model, see Data model configuration rules.