Research on problem of temporal information storage and temporal relational calculus based on Hadoop
Zuo Ya-ya · Jisuanji yingyong yanjiu · 2014
When facing the large amounts of unstructured temporal information,this paper established a data storage model under the distributed environment,and put forward a basic method about temporal data processing.It used the distributed and unstructured databases HBase which was under the Hadoop platform to store temporal data,then built the temporal storage data model by temporal storage unit which was based on temporal set.And for the characteristics of distributed processing and data types of temporal set,it proposed an implementation method about the relational calculus of massive temporal information in the model of Map / Reduce.Through extending relation calculation of temporal interval,it achieved relational calculus such as intersect operation,union operation which using temporal set as basement temporal data processing object.It gave the research example of medical temporal data show the applicability of the proposed data storage model and relational calculus scheme under the distributed application system.