Representation

Other approach Problem

Add explicit links to MARC Redundant data, archaic format

Relational database Complexity of bibliographic

relations subverts

normalization

Object-oriented database Procedural encoding of class

structure deters reasoning

about the data

We use Description Logic to implement:

• Ontology of concepts (model)

• Knowledge-base of instances (metadata)

Advantages compared to other proposals for new catalogs:

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