UDTs. See user-defined types (UDTs)
unchained transaction mode, 125
Unicode character stream
callable statements, 366
CLOB pointer, 367
converting, 468
parameter, setting, 531
prepared statements, 448–449
Uniform Resource Locator (URL)
callable statements, 366
database, getting, 528
Driver interface, 431
parameters, setting, 541
prepared statements, 449
reading, 494–495
string, passing to driver manager, 60–62
syntax. See JDBC) database naming scheme
value, getting, 468–469
writing, 500
UNIX audio file, 221
updates
auto-increments, 544
canceling, 452
car factory example, 214
clock (TimeT.java), 267
columns, 472–482
columns, automatic, 414–415
concurrency levels, setting, 451
with cursors, 138–139
detecting, 543
dirty reads, 125
dynamically typed data, 180–183
Interactive Structured Query Language (ISQL) tool in Web browser, 278–280
noncritical events during (SQLWarning), 103–106
performing, 70–71
ResultSets with cursors, 135–139
ResultSets without cursors, 134–135
tables, 26–27
updates, batch
checking for support, 420
described, 139–141
exception, throwing, 348–350
URL. See Uniform Resource Locator (URL)
user application. See application
user-defined types (UDTs)
listing, 488
type mapping, customized, 117
user ID, 60
user interface. See presentation tier
user session, reusing procedures. See stored procedures
user statements, database storage. See stored procedures
username
database, getting, 528
setting, 552
users, graphic interfaces. See client tier