We need a way to actually get to these records.

• Use existing Z39.50 database specifications
  
  
• IR-Explain---1 database
  
  
• Our own attribute set (OID: 1.2.840.10003.3.19 )
  
  
• Attribute Architecture where possible
  
  
• F and B element sets for Full and F&N
  
  
• Allows for aggregation and resource description retrieval
  
  
• Attribute Combinations problematic