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Chapter 6. Understanding Metadata > Sidecar .xmp Decoded

Sidecar .xmp Decoded

The first few lines say that this is a .xmp metadata document, identified by means of a namespace. You can think of a namespace as the secret decoder ring for a particular XMP schema, which is the collection of properties the document deals with. The use of namespaces avoids conflicts between properties in different schemas that have the same name but different meanings. For example, the "Creator" property in one schema might be the human who created a resource, while I another it might refer to the application used to create the resource.

Schema names look like URLs, but if you point a Web browser at the ones in Adobe .xmps you won't get far. They're actually URIs—Uniform Resource Indicators—that may or may not have an actual Web page attached to them (the Adobe ones currently do not).


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