Which tool is used to automate SQL injections and exploit a database by forcing a given web application to connect to another database controlled by a hacker?

DataThief is specifically designed to automate SQL injection exploitation, including the ability to force a target web application to establish connections to a database controlled by the attacker. It targets SQL Server's xp_cmdshell and linked server features to pivot from the victim database to attacker-controlled infrastructure.

NetCat is a general-purpose network utility for reading and writing data across network connections, not a SQL injection automation tool.

Cain and Abel is a password recovery and network sniffing tool focused on credential cracking, not SQL injection exploitation.

SQLInjector is not a widely recognized or standard tool in the SQL injection exploitation category and does not match the described capability.