Whether used together with access to SQL tables or used separately, this can greatly simplify application development.
无论是与对sql表的访问一起使用,还是单独使用,这都可以大大简化应用程序开发。
Before access path selection, the DB2 optimizer transforms SQL statements into forms that are semantically identical, such as by using predicate pushdown or predicate transitive closure.
在选择访问路径之前,DB 2优化器将sql语句转换成语意上一致的形式,例如使用谓词下推或谓词传递闭包。
The developer can now improve the SQL (or work with the DBA to do so) and repeat the cycle until the SQL USES a desired access path.
现在,开发人员能够改进SQL(或与DBA合作完成)并重复此周期,直到SQL使用了期望的访问路径。
The most popular way to objectize to programmatically access and manipulate relational data has been through special APIs and wrappers that provide one or more SQL statements written as text strings.
对于通过对象化来编程式地访问和操纵关系数据,最流行的方式是通过一些API 和包装器,这些 API 和包装器提供了一个或多个编写为文本字符串的SQL语句。
When you invoke DB-Access from the command line, you can specify a database as current and execute a file that contains one or more SQL statements. For example.
当您从命令行调用DB - Access时,可以指定一个数据库作为当前数据库,并执行包含一个或多个sql语句的文件。
LevelDB has some limitations: no support for SQL queries or indexes, supports multi-threaded single process access and is embedded, which is an advantage for some projects and a problem for others.
LevelDB也有一些局限:不支持SQL查询和索引,支持多线程单进程访问,并且可以用于嵌入式设备,这将使某些项目收益,但是也会给其他的项目来带麻烦。
The developerWorks tutorial "Locking down your PHP applications" (see Resources) talks about SQL injections: the art of sending malformed data to a database to cause harm or unwarranted access.
developerWorks教程 “锁定您的PHP应用程序”(请参阅参考资料)讨论了SQL注射:将不正常的数据发送到数据库可导致有害或无根据的访问。
DB2DataReader - You typically use the DB2DataReader for fast forward-only access to disconnected result sets that are returned from executing SQL statements or stored procedure calls.
DB2DataReader-您一般使用DB2DataReader对断开连接的结果集进行单向(forward - only)的快速访问,这些断开连接的结果集是执行sql语句或存储过程调用所返回的。
This article describes a generic way to access data using the Open SQL interface in which the actual data to be retrieved from a single table or a number of tables is specified at run time.
本文介绍一种使用OpenSQL接口访问数据的通用方法,这种方法从在运行时指定的一个或许多表中获取实际数据。
Web service for data access: You will use data Studio to expose the SQL or XML scripts as a web service.
数据访问的web服务:您将使用DataStudio将SQL或xml脚本显示为web服务。
The access plan can be collected with the db2expln command line tool or by right-clicking on your database in the DB2 Control Center and choosing the option Explain SQL.
可以通过 db2expln命令行工具,或者在DB2ControlCenter 中右键单击数据库并选择 Explain SQL选项来收集访问计划。
As we've discussed in this article, the DB2 optimizer may choose a sub-optimal access plan when there are host variables or parameter markers in the SQL statement.
正如我们在本文讨论的,如果sql语句中存在主机变量或参数标记,那么DB 2优化器可能会选择一个次优化的存取计划。
You can then use XQuery, SQL, or any of the application development interfaces that DB2 offers, to access and manipulate the XML data.
然后,可以使用XQuery、SQL或者DB2提供的任何应用程序开发接口访问和操纵XML数据。
Developers may encounter an SQL Exception error when trying to access the Customer Service utility after having accessed the Derby database from Geronimo's console, or vice versa.
开发人员可能会在通过Geronimo的控制台访问了Derby数据后再尝试访问CustomerService实用程序时遇到SQLException错误,反之亦然。
There is no requirement that I need to know anything about where or how the data is stored or how the RDBMS processes a SQL statement in order to access that data.
没有要求我需要知道任何关于数据是怎样存放,存放在哪,或者RDBMS是怎样处理一条SQL语句来访问那些数据的。
SQL Server does not exist or access denied.
SQL服务器不存在或访问被拒绝。
You can configure Proxy Server to permit or deny inbound SQL Server access to specific users, services, ports, and IP domains.
可对代理服务器进行配置,藉此授权或拒绝特定用户、服务、端口及IP地址(或域),对SQL服务器的访问。
You can configure Proxy Server to permit or deny inbound SQL Server access to specific users, services, ports, and IP domains.
可对代理服务器进行配置,藉此授权或拒绝特定用户、服务、端口及IP地址(或域),对SQL服务器的访问。
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