IEC 62656-5:2017规定了一种通过表格本体表示法来表示活动和活动之间关系的方法，称为&ldquo；parcellized活动模型&rdquo；或者简称PAM，它是通用表格本体数据模型的专门用途，称为IEC 62656系列第1部分中定义的parcellized ontology model（POM）。本文件可描述的活动包括企业、组织或服务集合的部分或全部，以及通过交换物理或非物理实体相互作用的一组事件或过程。IEC 62656的这一部分还定义了一种方法，用于唯一地识别活动，或以特定顺序发生的同系物。此外，本文件确定了活动之间交换的信息流、对象或材料流，其中每个活动由一个类表示，每个流由一个关系表示。

IEC 62656-5:2017 specifies a method for representing activities and relations among the activities by a tabular ontology representation, called “parcellized activity model” or PAM for short, which is a specialized use of a generic tabular ontology data model, known as the parcellized ontology model (POM) defined in Part 1 of the IEC 62656 series. The activities that can be described by this document include part or whole of an enterprise, an organization or a collection of services, a set of events or processes which interact with each other by exchanging physical or non-physical entities. This part of IEC 62656 also defines a method for uniquely identifying activities, or their homologues happenings in a certain sequence. In addition, this document identifies flows of information, objects or materials exchanged among activities, where each of the activities is represented by a class and each flow by a relation.