查询词典 database software

In addition, a new synchronization scheme, Double-Timestamp Transaction-Level Synchronization model is put forward to solve the synchronization problem under the 3-tier replication architecture (Mobile Client - Synchronization Server - Database Server). DTSTLS utilizes a novel double-timestamp strategy to promote the efficiency of synchronization. Besides, it ensures serializability and consistency of the mobile database system through transaction-level conflict reconciliation.Mobile transaction processing is another key technology to provide efficient information service in mobile computing environment.

通过引入一种乐观并发控制方法与两段锁协议相结合的移动事务处理机制，本文重点解决了交互式长事务的问题，并提供了对移动主机任意移动性和数据库系统一致性的支持；在移动对象数据库方面，本文提出了一种新的移动对象数据库模型—离散时空轨迹移动对象数据库模型，重点阐述了DSTTMOD模型中的位置表示方法及位置更新处理策略，并分别给出了基于GRID文件和基于QUAD树的移动对象索引算法。

Based on the summarization of the present research, the future system frame of the blind digital image forensics is proposed. According to the natural characteristics of digital image, the principles of constructing the standard testing database of sample images are also put forward. Moreover, the extensible topology structure is set up and the size of the database needed theoretically is calculated statistically.

在总结前人工作的基础上，提出了数字图像盲取证的系统框架；利用数字图像自然属性特征，根据数字图像取证的测试需求，提出了取证测试专用的标准图像样本数据库建库准则，建立了可拓展的图像库拓扑结构，并利用统计学方法计算了所需的建库规模。

Magazine on-line; Fibrovascular plant database; Plant specimen; Intro-seed database

在线期刊；维管植物库；植物标本馆；引种植物；种质资源库；珍稀植物库

Research based on data from the organization of multi-resolution, multi-scale data storage solutions for a series of theoretical and technical issues, Virtual Earth focus on the technical framework, spherical tile pyramid model, with tiled OGC WMS services integration, and geospatial services portal integration aspects of a more systematic analysis and experimentation, and come to some conclusions. The main contents are: This paper aims at database security which is a hot topic of information security at present. The database is the most important part of information system and it play an important role.

研究了从数据基础组织到多分辨率、多尺度数据存储所需解决的一系列理论和技术问题，重点在虚拟地球技术的架构、球面瓦片金字塔模型、与OGC瓦片WMS服务的集成、与空间信息服务门户的集成等方面进行了较为系统的分析和实验，并得出了部分结论。

While design the need of database, realization succinct and high effect of the management of database.

同时，对本系统的需求进行数据库的设计，实现简洁而高效的数据库对数据的管理。

Database, SQL language, Delphi 6, database module, library superintendence

数据库，SQL语言，Delphi 6，数据库组件，图书馆管理

However, if and only if, the new character set is a strict superset of the current character set, it is possible to use the ALTER DATABASE CHARACTER SET to expedite the change in the database character set.

如果，仅仅是如果，新的字符集是当前字符集的一个严格的超集，使用ALTER DATABASE CHARACTER SET命令是一个可行的方法。

After seeing the function of graph symbol in processing and constructing pattern symbol database,using the Computer Assistant Designand MapGIS,this paper designs reaches to the realization of the all-purpose land pattern symbol database,and researches the arithmetic of the special pattern s of swampland.

在了解GIS图形符号处理和花纹符号建库功能之后，利用计算机辅助设计技术和MapGIS软件平台具体实现在本专业工作中可实际应用的通用土地花纹符号库，并研究沼泽地特殊花纹的填充算法。

In this thesis, we introduce XML relevant technology and database swapper at first, continue chapter four, chapter five provides display on WEB of XML technology and switch technology of XML to HTML, and then chapter six provides XML application embodiment in the database --The bus inquires about the system online.

在这篇论文中，我们首先介绍XML相关技术与数据库交换技术，接着第四章，第五章给出了XML技术在WEB上的显示及XML到HTML的转换技术，紧接着第六章给出XML在数据库上的应用实例-公交车在线查询系统。

All the data dictionary tables and views for a given database are stored in that database's SYSTEM tablespace.

一个数据库全部的数据字典表与数据字典视图都存储在该数据库的 SYSTEM 表空间内。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。