文件名称:SQL92
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SQL92标准文档
SQL99是数据库的一个ANSI/ISO标准。这个标准的前身是SQL92 ANSI/ISO标准，而SQL92之前还有一个SQL89 ANSI/ISO标准。它定义了一种语言（SQL）以及数据库的行为（事务、隔离级别等）。你知道许多商业数据库至少在某种程度上是符合SQL99的吗？不过，这对于查询和应用的可移植性没有多大的意义，这一点你也清楚吗？SQL92标准有4个层次。-SQL92 standard SQL99 document is a database ANSI/ISO standards. The predecessor of this standard is SQL92 ANSI/ISO standards, before SQL92 There is also a SQL89 ANSI/ISO standards. It defines a language (SQL) and database behavior (services, isolation level, etc.). Do you know of many commercial databases in a way at least is in line with the SQL99 it? However, inquiries and applications for portability does not mean much, you also clearly? SQL92 standard has four levels.
SQL99是数据库的一个ANSI/ISO标准。这个标准的前身是SQL92 ANSI/ISO标准，而SQL92之前还有一个SQL89 ANSI/ISO标准。它定义了一种语言（SQL）以及数据库的行为（事务、隔离级别等）。你知道许多商业数据库至少在某种程度上是符合SQL99的吗？不过，这对于查询和应用的可移植性没有多大的意义，这一点你也清楚吗？SQL92标准有4个层次。-SQL92 standard SQL99 document is a database ANSI/ISO standards. The predecessor of this standard is SQL92 ANSI/ISO standards, before SQL92 There is also a SQL89 ANSI/ISO standards. It defines a language (SQL) and database behavior (services, isolation level, etc.). Do you know of many commercial databases in a way at least is in line with the SQL99 it? However, inquiries and applications for portability does not mean much, you also clearly? SQL92 standard has four levels.
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SQL92标准1824_ref_858.txt