E

effort estimation, F-26

ejecting users, 214

electronic communication medium for approval, 320

email, 91, 123

emergency extended access, 235

emergency remote access, 235

employee ID, 100

employee roles, 260

end of report line, 167

end-to-end response time, 196–197

English as a second language, accessibility and, 171

entity life history diagram. See state transition diagram

errors, 148, 233, 236. See also failures

error messages, 83, 236, 237

essence of a requirement, F-42

European Union, data protection provisions, 290

events, 144–145, 148–149, 333

event date, recording, 151

event record, 151, 152

event severity levels. See severity level

evolution of requirements, F-38

example requirements, 45–46

examples in a requirement definition, F-42

Examples section in a requirement pattern, 21, 26

excluded entities, determining, 216

exclusions, 16, F-61

executive summaries, avoiding acronyms in, F-48

explanatory text, displaying, 181

explicit interaction requirements, 62

extendability, 239

of fees, 336

of an interface, 57

multiness requirements and, 262

requirement pattern, 52, 73, 246–253

types of, 264

extendability requirement pattern, 52, 73, 246–253

extended access, 234–235

extends requirement pattern relationship, 32, 33

external dependencies, F-54

external interfaces, standards affecting, 72

external requirements specification, 79

external sources, allocating IDs from, 99

external systems, 127, 260

external users, 212

extra requirements, 27, 47

Extra requirements section

considering during requirements definition, 39

example requirements in, 28

in a requirement pattern, 21, 26–28

writing, 47–48

extreme programming (XP), 9, F-6, F-24

extreme requirements process, 9–10, F-24–F-26