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Lecture 4

GRA 743 - Week 4.docx

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Ryerson University
Graphic Communications
GRA 743
Chris Kular

GRA 743 – Week 4 What is Metadata? Metadata is "data about data” – A single unit of metadata can be assigned to a single item, or a collection of data including multiple content items and hierarchical levels. Metadata can be assigned to an asset in many different ways: – in application programs like Photoshop or Acrobat – in specialty programs like Lightroom or iTunes – in asset management programs like WebNative Where is Metadata Stored? When Metadata is applied to an asset, it is usually associated with the asset in one of three ways: 1. It is embedded in the asset 2. It is stored in a file that is linked to the asset 3. It is stored in a database associated with an asset management program Embedded Metadata – Lives in the asset itself – Can be automatically generated or user defined – Can be any combination of metadata standards (IPTC, EXIF, etc.) Linked Metadata – Lives in a file associated with the asset – Can contain user defined as well as automatically generated metadata – Popular with Adobe products, and usually XML-­­based (e.g. XMP) Database Metadata – Stored by asset management software with database functionality – Can be user defined as well as automatically generated metadata – Can be any type of metadata (IPTC, EXIF, XMP, XML, etc.) Metadata Formats & Standards • Powerful metadata – ability to be used acros
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