A workflow model is divided in to two parts:the description of scheduler as well as database updating and the description of properties,each of which is interpreted in an TLA formular.

• 其中基于TLA的工作流模型分为描述工作流过程控制、数据更新和描述工作流基本特性两部分,并分别表示为TLA公式。工作流性质的验证分为过程性质验证以及数据性质验证。