Well, we guess you already know that but still we want to remind you. The Application Server relies on the structure and the data of the Application Server Database. Any changes to the database schema (including tables, columns, triggers, views, stored procedure etc) will likely lead to fatal errors and possible data loss. The data stored within the tables of the database is managed by the Application Server. Any changes to the data that are not done from the Application Server will bypass the business logic of the Application Server and therefore will likely destroy data integrity which might lead to fatal (unrecoverable) errors and possible data loss!

Do never modify the database structure or the data contained in the database directly! This might lead to irreversible loss of data.