基于Vague集的时态数据库

Temporal database based on Vague set

为了更加精确地表示模糊信息,数据库的模糊属性采用Vague集来表示。基于Vague集的数据库模型与现有模糊关系数据模型相比,有更强的模糊表达能力,数据库中的每一数据及元组均可分别从真、假隶属度及未知程度三个侧面予以体现。在Vague数据库模型的基础上进行了扩展,提出了基于Vague集的时态数据库,为进一步研究Vague时态数据库的数据模型、数据理论等相关问题打下了基础。

To make the fuzzy information more accurate, the fuzzy attribute of the database is represented by Vague set. The database model based on Vague Set is compared with the current fuzzy relational data model, and it has a stronger expressing ability for fuzziness. Each data in the database can be reflected from the three aspects of truth, fake and the unknown extent. The temporal database based on Vague set is proposed, which is an expansion of Vague database model. It is fundamental for the further study on the data model and theory of Vague temporal database.