我应该将ACL表插入我的数据库还是创建一个单独的数据库？

I'm working on a JEE application of managing Users and I want to secure it using Spring Security ACL , I have my database which contains all the tables (User,Roles..) and I have a script of ACL Tables (acl_sid,acl_class...) Should I insert ACL tables into my database or create a separate Database ?I'm working on a JEE application of managing Us