Information Modeling and Relational Databases, 3rd Edition

R

• Range variable 591, 967
• RDF  See Resource Description Framework (RDF)
• RDFS  See Resource Description Framework Schema (RDFS)
• Reading Editor 450
• “ReadOnly” 386, 388f
• Real world 122
  • uniqueness constraints 500
• Recovery mechanisms 882
• Recursive queries 637–639
• Redundancy 113, 300, 882
  • avoided in relational mapping 492
  • within table 756
  • between tables 754
• Reengineering conceptual schema 63, 684, 758–764
  • conceptualization stage 759
  • data migration 759
  • forward engineering 759
  • mapping stage 759
  • reverse engineering 759
  • steps in 758–759
  • transformation stage 759
• Reference and Idea Language (RIDL) 945–946
• Reference chains 188
• Reference fact 84
• Reference Model of Open Distributed Processing (RM-ODP) 55
• Reference modes 67, 71, 74, 85–86
  • general 86
  • popular 86, 107
  • unit-based 86
• Reference ...