---
title: "9.2 Basic Collaboration Concepts"
chapter: "9 Collaboration"
source: "OMG BPMN 2.0.2 — formal/2013-12-09"
pages: "110"
---

> 9 Collaboration · páginas 110 · [índice](../README.md)


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## 9.2 Basic Collaboration Concepts


A **Collaboration** usually contains two or more **Pools**, representing the *Participants* in the **Collaboration**. The **Message** exchange between the *Participants* is shown by a **Message Flow** that connects two **Pools** (or the objects within the **Pools**). The **Messages** associated with the **Message Flows** MAY also be shown. See 9.3, 9.4, and 9.5 for examples of **Collaborations**. A **Pool** MAY be empty, a “black box,” or MAY show a **Process** within. **Choreographies** MAY be shown “in between” the **Pools** as they bisect the **Message Flows** between the **Pools**. All combinations of **Pools**, **Processes**, and a **Choreography** are allowed in a **Collaboration**.


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### 9.2.1 Use of BPMN Common Elements


Some **BPMN** elements are common to both **Process** and **Choreography**, as well as **Collaboration**; they are used in these diagrams. The next few sub clauses will describe the use of **Messages**, **Message Flows**, **Participants**,