Sommerville-Software-Engineering-10ed

800 Subject Index
UML (continued)
subsystem models, 205–06
system modeling using, 139, 140
use cases, 125–26, 141, 144–46, 163, 205
workflow models, 143–44, 544
unified user interface (UI), 596–97
Uniform Resource Locator (URL), 530–32, 539
unit testing, 47, 231, 232–37
Universal Description, Discovery, and Integration
(UDDI), 526
Universal Resource Identifiers (URIs), 471, 527
Unix systems, 183, 401
urgent changes, 260
usability
error tolerance, 289
patterns, 175
requirements, 109–10
security guideline, 397–98
usage, component models and, 471
use cases, 125–26, 141, 144–46
interaction models, 144–46, 163, 200–01
requirements specification and, 125–26
testing, 240–41
UML diagram models, 141
user access, 392
user actions, logging, 398
user-defined error checking, 360
user expectations, 228–29
user interface design, 62
user requirements, 55, 73–74, 102–03
user stories, 79–80, 82, 86, 247, 681–82
conceptual design and, 565–66
project planning (agile method) with, 681–82
task cards, 79–80
user testing, 249–51
utility services, 534, 548
V
V & V (verification and validation), 58, 227–29, 356.
See also testing; validation
V-model, 60
vacation package workflow, 542, 544–45
validation (software validation), 20, 69, 58–60
engineering activities for, 23, 44
requirements, 55, 129–30, 135
testing, 58–60, 227–29
verification v., 227–29
validity checks, 129, 326–27, 399
vehicle dispatcher system, 448–49
velocity (Scrum), 85
verifiability, 129
verification (software verification)
cost effectiveness of, 357
formal methods and, 300, 356–59
goal of, 228
levels of confidence, 228–29
model checking, 300, 358–59
safety engineering, 356–59
validation v., 227–29
version control (VC) systems, 731, 735, 753
version management (VM), 215, 216, 731,
735–40, 753
vertical software packages, 20
views, architectural, 173–175, 192
Virtual Learning Environment (VLE), 38
virtual systems, 588
visibility of information, 325–26
volatile requirements, 132
VOLERE requirements engineering method, 123–24
vulnerability, 377, 378, 391, 401, 402
W
waterfall model, 45, 47–49
weather information database, 531–32
weather stations, see wilderness weather stations
web application frameworks (WAFs), 444
web-based systems, 27–28
web services, 27, 52, 521, 524–33. See also services;
WSDL
browser development, 27, 521
business process model and, 544–46, 548
business, 534, 541–47, 548
classification of, 534, 548
clouds, 27, 532
components for, 526–29
composition (construction) of, 541–47
coordination, 534, 548
defined, 27, 521
http and https protocols, 530–31
interactive transaction-based applications, 25