Multi-DB Configuration

I am currently preparing to transition one of my sites over to a multi-database setup. I am going from one database to 256 and I want to make sure that I have everything setup correctly before attempting to deploy Multi-DB. Toward that end, what would be the configuration for the global database line in db-config.php for the following settings:

Username = 123456_utextwp
Database = 123456_textwp
Password = password
Localhost = 10.0.32.100
Database Host = 10.0.32.120

for one of the 256 databases in db-config.php for the following settings:

Username = 123456_utextabc01
Database = 123456_textabc01
Password = password
Localhost = 10.0.32.100
Database Host = 10.0.32.120

In particular, I'm curious if the "text" portion has any effect on the configuration. For my databases and usernames, I have a prefix (here, the 123456) then an underscore then a "u" if it's a username then the sequence numeber for the database (here, wp and 01). I notice that the first bit of data within the add_db_server() lines corresponds to the sequence number. Would having the "text" in the middle of the prefix and sequence number (and the "u" for usernames) change this first bit of data?