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The Model and Annotate category defines profiles supporting models, and includes capabilities related to model maintenance, constraints, bindings, extensions, and semantic annotations.

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• 1.3.1 - Bind Models An artifact description associates a resource with normative definitions of value specifiers. A value specifier includes a collection of value sets. A value set is defined in terms of its structure and semantics. A property-value pair construct binds an artifact description to the semantics of a value set within a given execution context.
• 1.3.2 - Constrain A policy represents some constraint or condition on the use, deployment or description of a resource as defined by a participant or, more generally, a stakeholder. A contract is a constraint that has the agreement of the constrained participants. A policy constraint is a measurable proposition that characterizes the constraint that the policy is about. A permission constraint governs the ability of a participant or other actor to perform an action or enter some specified state. An obligation constraint governs the requirement that a participant must perform some action or maintain some state.
• 1.3.3 - Extend A policy represents some constraint or condition on the use, deployment or description of a resource as defined by a participant or, more generally, a stakeholder. A permission constraint governs the ability of a participant or other actor to perform an action or enter some specified state. The ability to extend a service specification, including any associated model artifact, is subject to the permission policies embodied in the contract between the participants.
• 1.3.4 - Model Create, destroy, edit, and maintain models.
• 1.3.5 - Semantic Annotation In a diverse information environment, semantics must be used to clearly indicate the meaning of data. This requirement is expected to be addressed by the Semantic Infrastructure, although there will be a touchpoint between the caGrid 2.0 and the Semantic Infrastructure to annotate data with semantics.

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