Why Coronium use 2 database? RockMongo and SQLBuddy?

At first, I used SQL Buddy to build my users data. But then, I change it to users method that available trough client side (loginUser, registerUser, logoutUser, etc.) because it’s easier to manage user’s login session via default method.

However, I want to make a login log that save datetime information. For now, I made the table inside a database in SQL Buddy. But, when I take a look at RockMongo, the actual users data that coronium use is in RockMongo.

So I confuse wether I should choose RockMongo or both… ._.

What do you think? Thank you… :smiley: