Abstract: Evaluation of traditional village infrastructure is an important part of traditional village protection. Because of the complicated data environment and the multi-level and multi-weight evaluation process, traditional data processing methods are not sophisticated for traditional village infrastructure evaluation. Therefore, building a digital infrastructure evaluation system is an important way to ensure that the evaluation process is scientific and sustainable. Based on the analysis of the data characteristics and structure of the traditional village infrastructure evaluation system, this paper puts forward the multi-source and heterogeneous data storage scheme based on the non-relational database MongoDB and the calculation logic and table design of the multi-level infrastructure evaluation system. The paper focuses on two topics: one is under highly unstructured data-dependent conditions, how to build integrated text, binary stream documents and evaluation forms based on MongoDB unique document types so as to obtain integrated document set management database storage system; the other is to realize highly flexible and consistent evaluation calculation and analysis and in turn to meet traditional village infrastructure evaluation in diverse regional environments by building a multi-level infrastructure evaluation system and differential weight allocation in different regional environments.

Key words: traditional village, infrastructure, evaluation system, MongoDB Database