一旦应用软件确定用户要求的活动,它就使用数据库管理系统作为一个抽象的工具来实现操作结果。
Once the application software has determined what action the user is requesting, it USES the DBMS as an abstract tool to achieve the results.
说明:目的:掌握数据库系统的基本概念、原理和方法;学会如何有效地使用数据库管理系统,包括数据库的设计和对数据库的编程。
Purpose: to master the basic concepts of database systems, principles and methods learn how to effectively use the database management system, including database design and database programming.
数据建模师然后可以使用这个LDM文件作为输入,执行一个从 LDM到DBM最终到DDL 的转换,以便将其部署到数据库管理系统(DBMS)。
The data modeler can then use this LDM file as input to a transformation to DBM and ultimately to DDL to deploy to the database management system (DBMS).
传统的关系数据库管理系统有时使用锁来管理并发性,从而防止其他客户机访问某个客户机正在更新的数据。
Traditional relational database management systems sometimes use locking to manage concurrency, preventing clients from accessing data while another client is updating that data.
另外,还应该拥有使用HTML和/或XML 进行开发,以及使用SQL和数据库管理系统通信的经验。
You should also have some experience of developing with HTML and/or XML, and of communicating with a database management system using SQL.
每个数据库分区上的数据库管理器使用每个系统上的处理器来管理数据库中属于该分区的那部分数据。
The processors on each system are used by the database manager at each database partition to manage its own part of the total data in the database.
保证您能在本地文件中存储您的数据,但通常更有用的是使用一个关系型数据库管理系统(Relational Database Management System,RDBMS)来存储。
Sure you can store your data in local files, but often it is more useful to store it using a Relational Database Management System (RDBMS).
首先,Netezza数据库管理系统(DBMS),一个面向大规模并行netezza环境的高度优化的引擎,不会使用索引。
First, the Netezza database management system (DBMS), a highly optimized engine for the massively parallel Netezza environment, does not use indexes.
不建议使用Cloudspace或Derby这样的基于文件的简单数据库作为WebSphereProcessServer的数据库管理系统,单元测试除外。
It is not advisable to use simple file-based databases like Cloudscape or Derby as a database management system for WebSphere Process Server, other than for the purpose of unit testing.
如果您在创建数据库时使用默认值,则会创建下列系统管理的表空间。
If you use the defaults when creating a database, the following system-managed tablespaces are created.
连接管理和系统资源管理:连接管理基础设施使用户能够定义、编辑或删除到IBM和非ibm数据库的连接。
Connection management and system resource management: The connection management infrastructure enables users to define, edit, or delete connections to IBM and non-IBM databases.
在那种情况下,因为池管理器预先在启动时创建连接对象,所以,J2EE组件可以使用连接对象,而不会导致数据库资源管理器上的系统开销。
In that situation, a J2EE component can use connection objects without causing overheads on the database resource manager, since a pool manager creates the connection objects up front, at startup.
事务是以文本、列(或同时使用两者)的形式表现的来自真实世界的实体,将由数据库管理系统处理。
Transactions are real world entities that can be expressed in the form of text, numbers, or both, to be processed by a database management system.
使用表的字符大对象(CLOB)或二进制大对象(BLOB)列在关系数据库管理系统(DBMS)中按原样存储XML数据。
Using character or binary large object (CLOB or BLOB) columns of tables to store the XML data intact in a relational database management system (DBMS).
这使得数据库系统管理员可以优化没有使用更新语句处的性能,或使用更新语句时也可以防止死锁。
This allows the database administrator to optimize the performance where the update syntax is not used, or to prevent deadlocks when it is used.
也就是,不是使用VFS技术去访问现有的外部资源,而是要将一个特殊用途的数据库(位于应用程序内部)当作一个完整的文件系统进行管理。
That is, rather than using VFS technology to access existing external resources, it manages a special-purpose database, internal to the application, as a complete filesystem.
所有DB 2表空间都可以使用这个选项,包括系统表空间和临时表空间,以及数据库管理的表空间。
This option is available for all DB2 tablespaces, including system and temporary tablespaces and database managed tablespaces.
有些关系数据库管理系统(RDBMS),例如sybase,不支持在from子句中使用表表达式。
Some relational database management systems (RDBMSs), such as Sybase, do not support table expressions in the FROM clause.
这个命令使用在数据库管理器配置文件和授权系统编目视图(SYSCAT.DBAUTH)中找到的值。
This command USES the values found in the database manager configuration file and the authorization system catalog view (SYSCAT.DBAUTH). Listing 5 shows the results of issuing the command.
有许多操作只能使用 TSO来执行,特别是由z/OS系统程序员、DB2数据库管理员等执行的操作。
There are many operations that only TSO can perform, especially operations executed by z/OS systems programmers, DB2 database administrators, and others.
从数据库构建、属性数据库和空间数据库、路面使用性能评价模型等方面比较详细地介绍了路面管理系统。
Pavement management system was described in detail from the establishment of database, attribute database, spatial database, evaluation model of pavement performance and so on.
管理员组:系统管理员的组帐户,对工作组使用的所有数据库都拥有完全的权限。
Admins group: The system administrator's group account, which retains full permissions on all databases used by a workgroup.
开发人员可以使用一个相对稳定应用程序概念模型工作,并将这一模型映射到多种存储架构。例如不同的数据库管理系统的实现。
Developers can work with a consistent application object model that can be mapped to various storage schemas, possibly implemented in different database management systems.
数据库管理系统所存储的数据是由使用者产生并提取。
Users generate and extract data stored by the database management system.
在无人帮助下,这种数据库管理系统极易被使用者学习使用,在产生有价值的管理信息方面,也极为有力。
They are now easy enough for users to learn to operate without assistance and powerful enough to produce valuable management information.
LEAP是一个关系数据库管理系统,它越来越多的被广范围环境所使用。
LEAP is a relational database management system that is increasingly being used in a wide variety of environments.
本文论述了关系图象数据库管理系统IMDAT所使用的扩充的关系数据库模式及其实现。
A model for the extended relational database system, which is used for the relational image database management system IMDAT, and its implementation are described.
论述了在程序设计过程中,使用数据库开发工具独有的字段通用属性、查询设计器、类设计及SQL语言等功能,完成信息管理系统的设计过程。
This paper has a discussion on the process of information management design to use the common property of Database tools, query designer, class design, SQL language in the process of program design.
某些数据库管理系统允许使用函数或关键字(如CAST)将数据暂时转换成另一种数据类型。
Some database management systems allow you to use a function or keyword (such as CAST) to temporarily convert data to another data type.
某些数据库管理系统允许使用函数或关键字(如CAST)将数据暂时转换成另一种数据类型。
Some database management systems allow you to use a function or keyword (such as CAST) to temporarily convert data to another data type.
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