Database name login error. Double-check that you have filled in the correct information, and if you have filled in the information correctly, you can usually solve the problem. The database connection is unavailable for corporate account transfers because the database name is incorrectly logged in. A database is a "repository for organizing, storing, and managing data according to a data structure". It is a collection of large amounts of data stored in a computer for a long period of time, organized, available **** enjoyment, unified management.