An acronym for the four primary attributes ensured to any database transaction: atomicity, consistency, isolation, durability (see also Section 6.6.1). The ACID concept is described in ISO/IEC 10026-1:1992, Section 4.
Activity
A certain task within a process.
Activity diagram
A method to describe the orchestration of activities in UML.
Actors
Entities within a given scenario that are proactive; that is, they play a role. Actors can be end users, agents, and other systems.
Agent
A software agent is an autonomous, somehow intelligent software component that performs tasks to achieve some goals, most likely on behalf of a human user. The term agent is also used in business process management. In modeling the business domain an agent denotes a human or machine entity performing a process step that adds some value to the overall business process.
Agent system
The concept or implementation of agents that cooperate to perform tasks and achieve goals.
Aggregation
A complex entity that has been composed from less complex entities.
AOM
Asset-oriented modeling (see Section 3.2.2).
API
Application Programming Interface.
Application server
A Web server that can run applications for clients. Most application servers can offer application functionality in the form of Web services.
Asset
In asset-oriented modeling, an abstract notion for any object or relationship between objects that we want to include in a model.
Association
A relationship that somehow correlates entities with others.
Authoring
Process of setting up a presentation, for example, on the Web, normally using an appropriate tool set.
Browser
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