使用不同时间粒度查询时态临床数据库：GCH-OSQL语言
Querying temporal clinical databases with different time granularities: the GCH-OSQL language.
作者信息
Combi C, Pinciroli F, Cavallaro M, Cucchi G
机构信息
Dipartimento di Bioingegneria del Politecnico di Milano.
出版信息
Proc Annu Symp Comput Appl Med Care. 1995:326-30.
There is a need for managing temporal clinical information given at different levels of granularity. Different time granularities are also needed in querying clinical databases. In this paper, we describe GCH-OSQL (Granular Clinical History--Object Structured Query Language), an object-oriented temporally-oriented extension of SQL. GCH-OSQL is based on an object-oriented temporal data model. It allows storage of clinical information at different and mixed granularities. GCH-OSQL deals with the valid time of clinical information. GCH-OSQL offers also a graphical user-interface. It guides different end users, from expert to naive, to formulate expressive and correct queries.
需要管理以不同粒度级别给出的时间临床信息。在查询临床数据库时也需要不同的时间粒度。在本文中，我们描述了GCH - OSQL（粒度临床病史——对象结构化查询语言），它是SQL的一种面向对象的、面向时间的扩展。GCH - OSQL基于一个面向对象的时态数据模型。它允许以不同的混合粒度存储临床信息。GCH - OSQL处理临床信息的有效时间。GCH - OSQL还提供了一个图形用户界面。它引导从专家到新手的不同终端用户制定有表现力且正确的查询。
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