In the updateCatalog function, retrieve the form field values and create an SQL statement to add a row to database table Catalog.

在updatecatalog函数中，获取表单字段值，并创建一条sql语句，以便将一行添加到数据库表Catalog中。

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You can not add user with unlimited SQL database number!

您不能添加一个没有SQL数据库数量限制的用户！

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The realization of the database query, add, delete, SQL queries, and so on.

实现对数据库的查询，添加，删除，SQL查询等。

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Google hacking was first popularized by Johnny Long, a penetration tester who created a Google Hacking Database that allowed anyone to add interesting security search queries that might turn up vulnerabilities to exploits like SQL Injection or Cross-Site Scripting.

FORBES: Researchers Will Turn Google And Bing Into Web Bug Warning System