objects, naming conventions, 632
OLE Automation/COM objects, execution of, 600-603
Open statements, 96
OpenQuery() function, 136-137
OpenRowset() function, 137-138
OpenXML() function, 138-142
operators, 618
optimistic locking, 443-446
optimizer module, 639
orphaned users, 559
output parameters, 32-34
overconfidence, 499
ownership chains, 549
cross-database, 549-550