To make collaboration tasks work effectively, it is very important to analyze what collaborators are doing, which position they are in, and how they communicate with each other. Multi-Context Maps (MCM) and Collaborative Linkage Maps (CLM) together constitute a solution for such demands. These methods analyze each collaborator’s position precisely, so these models capture important information in the process. In this paper, we propose to extract E-R models, which are widely used to design databases in the early phases, from MCM and CLM. The process of composing E-R models still relies on the designers’ experience or their intuition, which often causes inadequate formalization of complex requirements. Our extraction provides a systematic method of designing data models. We also propose how to apply the extracted model when designing databases.