Encyclopedia of Database Systems 2009: U

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• UML. 3221
  
• Uncertain Databases. 3221
  
• Uncertain Information. 3221
  
• Segev Wasserkrug:
  Uncertainty in Events. 3221-3225
  
• Nilesh N. Dalvi:
  Uncertainty Management in Scientific Database Systems. 3225-3231
  
• Undo. 3231
  
• Ethan V. Munson:
  Unicode. 3231-3232
  
• Martin Gogolla:
  Unified Modeling Language. 3232-3239
  
• Uniform Resource Identifier. 3239
  
• Cristina Sirangelo:
  Union. 3239-3240
  
• Uniqueness Constraint. 3240
  
• Unnoticability. 3240
  
• Simone Fischer-Hübner:
  Unobservability. 3240
  
• Unsupervised Learning. 3240
  
• Unsupervised Learning on Document Datasets. 3240
  
• Until Changed. 3241
  
• Update Propagation in Peer-to-Peer Systems. 3241
  
• Zachary G. Ives:
  Updates and Transactions in Peer-to-Peer Systems. 3241-3244
  
• Yannis Velegrakis:
  Updates through Views. 3244-3247
  
• URI. 3247
  
• Nigel Bevan:
  Usability. 3247-3251
  
• User Centered Design. 3251
  
• UUID. 3252
  
• User Classifications. 3252
  
• User-Centred Design. 3252
  
• Christian S. Jensen, Richard T. Snodgrass:
  User-Defined Time. 3252
  
• User-Level Parallelism. 3252
  
• Using Efficient Database Technology (DB) for Effective Information Retrieval (IR) of Semi-Structured Text. 3252
  
• Utility Computing. 3252