Skip to content Learn about the access keys available for Aristotle Open Metadata Registry


Below is a list of all help pages about the different concept types available in this registry, click the name for more information. To see a list of help pages for concept types provided by an extension click the extension name.

Generic help pages can be found in the Help index page.

Name Provided by Details
Conceptual Domain Aristotle Metadata Registry A concept that expresses its description or valid instance meanings
Data Element Aristotle Metadata Registry A precise way of defining how a measurable attribute of a set of objects may be recorded in a system, using reusable metadata components.
Data Element Concept Aristotle Metadata Registry A valid pairing of an Object Class and a Property to define a measurable attribute of the object, idea or event being observed.
Data Element Derivation Aristotle Metadata Registry application of a derivation rule to one or more input Data Elements to derive one or more output data elements.
Data Set Specification Aristotle Dataset Extensions A collection of Data Elements for collecting data.
Data Type Aristotle Metadata Registry set of distinct values, characterized by properties of those values and by operations on those values
Indicator Comet Indicator Registry An indicator is a single measure that is reported on regularly and that provides relevant and actionable information about population health and/or health system performance.
Object Class Aristotle Metadata Registry A definition for classifying a set of real objects, ideas or events that all share common measurable attributes
Outcome Area Comet Indicator Registry A statement that specifically defines the target, standard, or the ideal result against which an Indicator is to be assessed.
Property Aristotle Metadata Registry A definition of an attribute common to all members of a set defined by an Object Class
Unit Of Measure Aristotle Metadata Registry The actual units in which the associated values are measured
Value Domain Aristotle Metadata Registry A definition of how to record the measurement a particular attribute, either using a coded list of values or a description of the possible values.