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Name	#	Details
		Basic Metadata Registry Objects
Data Elements	410	A Data Element is a precise way of defining how a piece of data is recorded for a specific set of objects, using reusable metadata components. Data Elements are composed of a Data Element Concept, which describes the meaning of the data, and a Value Domain which describes how the data is recorded.
Data Element Concepts	357	A Data Element Concept defines an idea that could be recorded by data, without specifying how it would be stored or measured. Data Element Concepts are composed of an Object Class, which describes the thing of interest, and a Property that defines which attribute of the thing would be recorded. Data Element Concepts can be referenced by multiple different Data Elements that each specify the Value Domain used to record the data.
Data Types	4	A Data Type describes a way of storing a specific form of data within a system.
Object Classes	23	An Object Class defines a way of identifying or classifying a set of real objects, ideas or events that all share common measurable attributes.
Properties	273	A Property is an attribute common to all members of a set of things defined by an Object Class.
Value Domains	198	A Value Domain describes how to record the measurement of a particular type of data, either using a coded list of values or a description of the possible values. Value Domains can be linked to Data Elements that all share a common way of recording data, and its values can be linked to a Conceptual Domain to provide additional context.
		Classifications Management
		Data set registration and management
Data Catalogs	2	A Data Catalog records a curated collection of data sets.
Data Sets	3	A Data Set describes a record of data, including any location or time boundaries for the data, that has been captured and is available for use under a specific licence. A Data Set may be included in a Data Catalog, and can reference multiple Distributions that record different parts or formats of the data that are available to download.
Data Set Specifications	9	A Data Set Specification describes an agreement to collect an ideal standard of data. A Data Set Specification may reference other Data Set Specifications or Data Elements to describe the data that should be collected under the agreement.
Distributions	122	A Distribution describes the structure and format of a specific downloadable collection of data. Multiple Distributions that capture different parts of data or provide different formats for data may be grouped into a single Data Set.
		ISO 11179 Edition 2 Backwards Compatibility Objects
		Performance Indicator Management Objects
		Business Glossary Objects
Glossary Items	1	A Glossary Item records a business term that is commonly used within the metadata registry. A collection of Glossary Items is commonly referred to as a business glossary.
		Ontology
		Relation and Link management