| 1. | The technology and application of auto temporal database in data mining
主动时态数据库在数据挖掘中的技术和应用 |
| 2. | We should solve the problem of excess data and the difficulty in expression and management of the temporal db
而且目前时态数据库应解决其数据冗余大和难于表达及管理的问题。 |
| 3. | Firstly , the extension methods and principles of atsql2 , which is a temporal query language , are discussed
然后以timedb为基础，通过以下三个步骤，深入分析和研究时态数据库管理系统的实现技术。 |
| 4. | Temporal databases store and manage different time - state data , taking time as one of the data attributes managed by systems
时态数据库将时间作为数据的属性纳入系统的管理范畴，存储和管理多个时间状态的数据。 |
| 5. | But the user may define time granularities in their wills . temporal database should support the user to manipulate data in any time unit
时态数据库管理系统tdbms ( temporaldatabasemanagementsystem )应提供对用户定义时间的支持。 |
| 6. | In this paper ， we discuss some optimizing strategy on temporal object - orient database ， and give some algorithms for processing temporal queries
在时态数据库基态修正模型的基础上，讨论了时态面向对象数据库查询优化策略，并给出相应的算法。 |
| 7. | Temporal database of land use was used to manage increment data in effect and to retrieve the historical data of land use by the method of plot flow
土地利用时态数据库能有效地管理增量数据，按“图元流动”的方法可实现土地利用数据的历史回溯。 |
| 8. | As a front - end of commercial dbms , timedb , which is a successful prototype of temporal database management system , basically realizes the managements of temporal data
作为商业dbms的前端构件， timedb基本实现了时态数据管理功能，是比较成功的时态数据库管理原型系统。 |
| 9. | Basing on above consideration , the thesis focuses on the research of implementation technologies of temporal database management system , by means of analyzing timedb ' s implementation methods
基于以上考虑，本文通过分析timedb的实现方法，研究时态数据库管理系统的实现技术。 |
| 10. | Our system ' s underlying dbms is relational dbms , but we do n ' t want to modify the structure and the algorithm of the dbms , so we add some module between dbms and code
由于底层采用的是关系数据库，但又要避免对底层dbms的复杂数据结构或者算法做修改，所以我们采用在用户和数据库系统中添加一些中间功能模块的方法来建立一个时态数据库。 |
