摘要:
All connected Oracle users must run two modules of code to access an Oracle database instance.
- Application or Oracle tool: A database user runs a database application (such as a precompiler program) or an Oracle tool (such as SQL*Plus), which issues SQL statements to an Oracle database.
- Oracle database server code: Each user has some Oracle database code executing on his or her behalf, which interprets and processes the application's SQL statements. 阅读全文