This thesis discusses the way in which the temporal database manages these time granularities , converts between different time granularity representations of information , and makes the conversion transparent to users Tdbms如何管理这些时间粒度，如何转换基于不同时间粒度存储的信息，并使这种转换对数据库用户完全透明，是时态数据库领域的一个重要课题。
In terms of the requirement of storing and processing medical temporal information , the temporal dbms technology is applied to the medical field and temporal dbms based on computer - based patient records ( cprs ) is constructed 本文根据目前医疗系统对支持存储和处理时态信息的需求，将时态数据库技术运用到医疗领域中，建立了一个基于电子病历的时态数据库原型系统。
Within the past twenty years , researches of temporal database theory have acquired great achievements ; however , implementation technologies of temporal database stay in the primary phase . by now there is no complete temporal database management system yet 经过二十多年的发展，时态数据库理论研究取得了丰富的成果，而时态数据库实现技术尚处于起步阶段，目前国内外还没有一个真正意义上的时态数据库管理系统。
In terms of theory firstly , an integrating data source is set by integrating personnel information and file information , static information and dynamic information , basical information and deriving information . and a hrms with a distributional architecture is built up 1 、在理论上，以时态数据库理论作为基本理论，将人事信息与档案管理相结合，将基础信息和衍生信息，静态信息与动态信息相结合形成整合的数据源。
Through analysis and researches of constructive methods and principles of atsql2 and timedb , the thesis shows a feasible solution of the implementation of temporal database management system . besides , it discusses the disadvantages of timedb . all these provide basis for future implementation of temporal database management , accumulating the technologies and experience of component development 通过分析和研究atsql2以及timedb的构造方法和原理，本文展示了目前行之有效的时态数据库管理系统实现技术，同时讨论了timedb在时态数据管理功能上的不足，为以后成功开发时态数据库管理系统提供了基础，积累了技术和经验。
In addition , it puts forward a nested temporal db , which , with stronger expressive ability than others , is a breakthrough to entity - relationship model and is referred to as nter model . it also verifies the expressive ability of nter when it is applied to sidss . finally , in view of the features of sidss and the current status of salary distribution system , it conducts initial study of the sidss based on temporal - spatial relationship and the sidss with a temporally - driven knowledge database , with the aim for us to develop a consummate sidss system in the future 本文中，介绍了时态数据库的基本概念、发展、特点和分类；结合sidss的背景、特色及体系结构，详细讨论了sidss的时态性及其数学模型，指出将时态数据库应用到sidss并作进一步的研究是必然趋势，并在此基础上研究了时态数据库系统的模型；在探讨了几种模型之后，打破实体-关系类的模型的框框，提出了一个表达能力较强的嵌套时态数据模型，称之为nter模型( nestedtemporalentity - relationshipmodel ) ，并验证将其应用到sidss系统中的表达能力；最后针对sidss的特点以及目前工资管理系统的状况，进一步对基于时空关系的sidss系统、由时态驱动知识库的sidss系统进行初步探讨，以期今后对开发更完善的引） ss系统作进一步的研究。
The salary intelligent decision support system ( sidss ) is developed under our cooperation with personnel department of guangdong province . because data and knowledge in the system is time - varying , three technologies will take in our system . that ' s temporal database , intelligent decision support , active database 我们和广东省人事厅合作开发的工资智能决策支持系统( sidss ) ，由于存在着大量的随时间变化的数据和知识，所以我们将其作为研究时态数据库和时态知识推理的一个应用系统，这个系统是一个将决策支持技术、主动数据库技术以及时态数据管理三种技术融合一体的系统，即是一个具有主动性的时态工资管理决策支持系统。
In the last part , we give the meaning of adjacency and increment in temporal database , put forward the basic increment model which based on discretization , introduce several methods for discretization , and constitute an integrated data mining model on the basis of combining with dha arithmetic . finally the quantitative association rules which interest the users by making use of some standards such as interest measure are elicited ( 3 )给出了时态数据库中的相邻关系( adjacency )和增量( increment )的意义，提出了基于定量属性离散化的基本增量模型，介绍了常用的定量属性离散化方法，并结合dha法建立一完整的数据挖掘模型，最后用兴趣度等标准判定得出用户感兴趣的定量关联规则。
The temporal attribute of sidss make it a certainty to apply temporal db to sidss . the temporal db research can not be separated from the existing db and its major development . in fact , it is necessary to increase some functions to the mainstream db model to deal with temporal information 工资智能决策支持系统的时态性使得时态数据库的应用成为必然，时态数据库的研究不能抛弃和脱离现有的数据库和数据库发展的主流，应考虑如何在主流数据库模型上增加时态信息处理的功能。
The tgcm works as an extended module in the tdbms to support the characteristics of multiple time granularities . if the time granularity of result set is different from the time unit the data stored in the database , aec and ilc could cooperate to make the conversion totally transparent to user . by this way , managing time granularities by tdbms is completely achieved 如果用户希望得到的查询结果的时态粒度与时态数据库中所存储数据的时态粒度不一致，通过tgcm中aec和ilc的协作交互，使数据存储的时间粒度与查询的时间粒度之间差异对用户透明，并将结果集以用户所需要的时间粒度提交给用户接口，从而实现tdbms对用户自定义时间粒度的全面管理。
