个人曾经写过的数据访问接口，包含：MSSQL、Mysql、Oracle等数据库的公共处理接口。可以拿过来直接使用，放在手里好多年了。-Wrote personal data access interface, including: common processing interface MSSQL, Mysql, Oracle and other databases. You can take over the direct use, on hand for many years.