This file defines the root library type and element. VersionedIdentifier is composed of three parts: (1) an optional system, or namespace, which provides a globally unique, stable scope for the identifier, (2) an identifier which identifies the set of all versions of a given resource, and (3) the actual version of the instance of interest in this set. The VersionedIdentifier therefore points to an individual 'versioned' instance of a resource such as the third version of a library. Defines a data model that is available within the artifact. The URI of the model that is being referenced. This URL must also be defined as a namespace in the root element of the document to allow for elements of the model to be referenced within the artifact. The fully qualified name of the model. If this is not provided, the localIdentifier attribute is used as the name of the model. The model qualifier is the namespace name of the model. Includes a library for use within the artifact. Specifies values for parameters in the included library as expressions that may reference parameters in the current library. Bind expressions are evaluated in the same context as any parameter value expression, in that they only have access to parameter definitions in the library and may not contain any retrieve expressions. In addition, a bind clause on an included library overrides any parameter values provided by the evaluation environment. A unique name within this artifact for the library reference. This name is used within this artifact to reference components of this library. Defines the type of the library. If this attribute is omitted, the library is assumed to be an ELM library artifact. Defines the path to the library. Optionally defines the required version number of the referenced library. The ContextDef type defines a context definition statement. Note that this is a placeholder for the context statement within the library. The effect of the context definition is applied by the translator to the definitions that follow. Defines an available context type for the model. Specifies the type for the context. Specifies the key elements, in order, of the context type that form the reference key for the context. The elements taken together must form a unique identifier for instances of the context. Specifies the name of the context. This is the name that will be referenced by context statements within CQL. Defines the relationship of a class to the context. Specifies the related key elements, in order, of the type that contain the reference to the context. There must be the same number of elements, and in the same order, as the target context. Specifies the target context of the relationship. Indicates that the starting index for a list-valued element is one. By default, lists are zero-based. The ClassInfoDef type models information associated with a single class in the data model. Namespace is the namespace of the class. This is typically just the name of the model, but can contain additional qualifiers. The name attribute specifies the name of the type within the data model. This corresponds to the name of the class within the class model, or the name of the type in the case of an xsd. In FHIR, this corresponds to the name of the resource. The identifier attribute specifies a unique name for the class that may be independent of the name. In FHIR, this corresponds to the profile identifier. The label attribute specifies the name of the class as it is referenced from CQL. This is a user-friendly identifier for the class that can be used within CQL as an alternative way to reference the class. The retrievable attribute specifies whether the class can be used within a retrieve statement. This flag is intended to allow the implementation to control whether or not the class can be used as a data access point for the data model. The primaryCodePath attribute specifies the path relative to the class that should be used to perform code filtering when a retrieve does not specify a code path. The primaryValueSetPath attribute specifies the path relative to the class that should be used to perform alternative value set matching when source data does not have a code defined. Namespace is the namespace of the type. This is typically just the name of the model, but can contain additional qualifiers. Name is the unqualified name of the type within this model. Indicates that the starting index for a list-valued element is one. By default, lists are zero-based. library represents a serialized library of CQL-Epression Logic Model. A Library is an instance of a CQL-ELM library. The identifier element defines a unique identifier for this library, and optionally, a system (or namespace) and version. This is the identifier of the XML schema (and its version) which governs the structure of this Library. Set of directives defined in the library Set of data models referenced in the Expression objects in this knowledge artifact. A reference to a data model that is used in the artifact, e..g., the Virtual Medical Record. Set of libraries referenced by this artifact. Components of referenced libraries may be used within this artifact. A reference to a library whose components can be used within the artifact. The parameters defined within this library. The code systems defined within this library. The value sets defined within this library. The codes defined within this library. The concepts defined within this library. The contexts defined within this library. The statements section contains the expression and function definitions for the library. The infoDefs section contains the model definitions for the library.