Oracle9iR2 Data Warehousing
U
Undirected learning, 475
Unstable indexes, 246–47
checking for, 246–47
rebuilding, 247
Unsupervised learning, 475
Usage patterns, 15
User-defined aggregates, 125–27
defined, 125–26
in extensibility framework, 126
implementation, 127
ODCIAggregate interface, 126
SalesForecast() function, 126–27
See also SQL functions
USER_EXTERNAL_TABLES dictionary view, 251