Mass customization is the key to the successful implementation of SaaS software service. In this paper, in order to meet diverse requirements of different customers and customers' variable requirements for SaaS data, a data architecture for SaaS software service based on mass customization is proposed, analyzing and comparing three models of the SaaS architecture. Hie model of dynamic data extension is proposed based on shared data model to meet the personal requirements of the tenants. Finally an example demonstrates the feasibility of the extension model.%大规模定制是SaaS软件服务成功实施的关键.为满足租户对SaaS数据差异化的需求和不断变化的需求,本文提出SaaS软件服务基于大规模定制的数据层架构,分析和比较了3种数据架构设计方案.针对共享数据库、共享Schema架构提出了动态数据扩展模型,以满足租户的个性化需求.最后通过案例证明了此扩展模型的可行性.
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