一套完整的客户关系管理系统的数据设计方案，主要在项目的开发和用户的使用方面考虑较多，适合大多数公司的可扩展性-A customer of integrity relates to the data of managing the system design scheme, mainly consider in the tapping of the item and the use of the consumer more, suit majority of companies of can expand malleability