hsqldb数据库特定表删除问题，使用hsqldb / hibernate和我的maven项目

I am very new to this. And I am trying to configure a net-beans Maven project with hsqldb and hibernate. I have set up the database and I am able to save some data to the database. I am using the file mode. and this is my connection url I am very new to this. And I am trying to confi