CaseIdentificationType
----------------------

Describes the information needed to identify an individual case within a record type. This may be the variable or concatenated variable used to identify a unique case of a particular record type. Often referred to as a unique key. There may be more than one means of identifying a record. For example a US Census Summary File has a LogicalRecordIdentifer that is unique to the original file within which it was published. A specific geography has a set of fields that uniquely identify it.

Properties
~~~~~~~~~~

.. csv-table::
   :header: "Name","Type","","Description"
   :widths: 15,10,5,100

   "FixedIdentifier",":doc:`/composite-types/FixedIdentifierType/index`","0..1","Reference to the variable containing the unique identifier. This may be a concatenated variable which indicates the combination of variable required to create a unique identification. If more than one variable reference is included the combination of the variable field contents must be unique and all variables are required for case identification."
   "ConditionalIdentifier",":doc:`/composite-types/ConditionalIdentifierType/index`","0..1","Describes the information needed to identify a specific record or case within a record type. Repeating the field allows multiple means of identifying a case referencing multiple variables."
   "IsPrimary","boolean","0..1","Indicates whether the case identifier is the primary key."


Relationships
~~~~~~~~~~~~~
The following types reference this type.

* :doc:`/composite-types/LogicalRecordType/index`

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