Main bldg blocks: digital objects, handles, repositories
Purpose of IA is to rep riches & variety of library info
-digital object: way of structuring info in dig form, some of which may be metadata & includes a unique identifier called a handle.
-DOs often in sets, structure depends on info
-material can be devided into cat's (SGML, WWW objects, comp prog;s, digitized radio prog's etc)
-user interface: browser & client svcs
-repository: interface called Repository Access Protocol
-handle system: unique indentifiers
-search system
Issues in structuring info:
-dig materials frequently related to others by relationships (part/whole etc)
-same item may be in different formats
-diff versions created often (mult copies, or time-based)
-obj's have diff rights & permissions
-users access from diff comp sys's & networks
key-metadata: info to store, replicate, transmit obj w/out providing access to the content. includes terms & cond's and handle
digital material: used to store DL materials
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