The Metadata Repository (MDR) provides a repository or storage location for metadata definitions. Metadata is "information about information." A message format definition, for example, defines the format or structure of a message at the field level. In other words, a message format definition is information about the information contained in a message. It does not describe the actual values of fields within the message.
Metadata definitions allows uniform processing of messages. When such definitions are stored and externalized in the MDR, they can be accessed by other programs and products to parse or create messages, access fields in a message, convert messages, and manipulate messages.
The Metadata Repository stores definitions of:
schemas for XML
XML Schemas 1.0
External Entities (commonly called DTDs)
message formats
XML Documents conforming to the World Wide Web Consortium's (W3C) XML 1.0 Recommendation.
Raw Messages (non-XML messages)
Raw Message groups
Raw Message shared fields
Conversions (CASP Only)
Conversion Maps
Function Libraries
Using the Directory Administrator, you can define these types of metadata:
XML Entities
XML Schemas
Raw Messages/Groups
Shared Fields
XML Documents
Conversion Map
Function Library
To access the metadata repository:
Start the Directory Administrator and open the directory, LDIF, or local configuration file in which you want to work.
Click on the Directory
Organization tab.
The Directory Organization tab reflects the hierarchical structure of the metadata repository. At the root of the tree is the unnamed global namespace. All other namespaces, including any you create, are shown under this namespace.
A Metadata Repository icon is associated with each namespace. Under each Metadata Repository icon, objects in that namespace are created and displayed according to object type: XML External Entity, XML Schema, XML Document, Shared Field, Raw Message/Group.
When you select an item in the tree, its properties and other information about it are displayed in the table view in the right-hand panel.
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