SQL server and SQL Express are RDBMS (relational database management systems) that run on platforms (physical hardware, such as workstations or servers).
SQLServer与SQLExpress是在平台(物理性硬件，例如工作站或者服务器)上运行的RDBMS(关系数据库管理系统)。
Once you understand SQL, you’ll have a much better grasp on the limitations of an RDBMS.
一旦你理解了SQL，你会更好地领会一个关系型数据库管理系统的局限性。
The Standard Query Language (SQL) is a wonderfully compact means of expressing exactly what data interests you within an RDBMS database.
“标准查询语言(SQL)”是一种能够确切表达RDBMS数据库中您所感兴趣的数据的极其简洁的方法。
However, even within an RDBMS environment, the actual syntax and format of the SQL statements may vary depending on the particular database product.
然而，即便是都是关系型数据库的环境下，由于不同的数据库产品，也会导致SQL在使用上，语法和格式也各不相同。
In theory, there is only a certain level of loose coupling that SQL and RDBMS can cope with before table structure reorganization must occur.
在理论上，在必须执行表结构重组之前，SQL和RDBMS只能处理某种程度的松散耦合。
The only way to solve these problems is to manually tweak the XML, on a case-by-case basis and take into account the SQL syntax of the target RDBMS.
解决这些问题的惟一方法是手动调整XML，进行逐例调整并考虑目标RDBMS的SQL语法。
Therefore, rather than call any database library -- whether for a specific RDBMS or via a mechanism like ODBC -- xml2sql and dtd2sql create simple textual SQL statements.
因此，不调用任何数据库的库 --无论是特定的RDBMS还是通过象ODBC 这样的机制 --xml2sql和dtd2sql 都创建简单的文本SQL语句。
The SQL command to obtain this list varies from database to database, The script in Listing 18 uses MySQL's SHOW TABLES command, but this is not portable across different RDBMS.
获取此列表的SQL命令随数据库的不同而有所不同，清单18中的脚本使用MySQL的SHOWTABLES 命令，但是这并不能在不同的 RDBMS 之间移植。
Once you construct your DSN and create an XML_Query2XML object instance, it's time to actually execute an SQL query on the RDBMS and turn the result into XML.
构造DSN并创建XML_Query 2x ML对象实例后，即可实际对RDBMS执行SQL查询并将结果转换为XML。
The basic optimization methods of the SQL query language is presented by comprehending executive tactics of RDBMS optimizer and analyzing the factors that affect the SQL query languages efficiency.
介绍RDBMS优化器的执行策略和分析了影响SQL查询效率的因素的基础上，提出了优化SQL查询效率的基本方法，以提高数据库查询的执行效率。
The basic optimization methods of the SQL query language is presented by comprehending executive tactics of RDBMS optimizer and analyzing the factors that affect the SQL query language efficiency.
通过了解rdbms优化器的执行策略，并分析了影响SQL查询语句效率的因素，提出了SQL查询语句的基本优化方法，充分利用这些方法能提高SQL查询语句的执行效率。
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。
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。
应用推荐