I

Identifier bag, 84

if activity, 280

IFX vocabulary, 41

Imagination, xv

Implementation code

defining services in, 206–208

mapping of properties to, 208–209

mapping of references to, 209–211

Implementation, defined, 198–199

Implementation policy, 201, 203

Implicit header, 77

Import declaration, 62

Imports, 290–291

Inbound message activities (IMAs), 173, 275

Include declaration, 62

Information hiding, xv

In-only message exchange pattern, 16

In-out message exchange pattern, 16

Instance attributes, 55

Instance document, 55, 62–63

Instance elements, 55

Integer properties, 227

Integers, 53

Integration services, 4

Integrity, 20, 231–233

Intent, 201

Interaction policy, 201, 203

Intermediaries, 10

Internet Engineering Task Force (IETF), 47

Interoperability, 3

Inverse integrity, 231–233

Invoke activity, 170–172, 273–274

Iterative construction, 187, 190–192