right click you conenct > new database
call it wow
click click on the database wow and go to arcemu > sql > and there will be 3 structure SQL's (world, char and logon) execute all 3 of them 1 by one into the db, gratz youve got your structure.
now you need a database, these can be found all over, for example NCDB, Project Silvermoon etc, it all depends on what EMU you are using. there will be a big SQL called world o databse or somthing, you do what you did to the 3 structure to this, (right click the database > execute batch file and select it)
once its done you will have a database
p.s. you can also make 2 databases, one for the world structure and 1 for the char/logon structture, then execute the database on the world one, but i find it easier to put them all in 1 big database
p.s.s. sorry for the spelling mistakes, its 4am and i rushed it :P