Wrong ETS name

[htdat148]

Hi,

I found your code example form Erlang Programing book, the delete_usr function used "subDisk, subRam, subIndex" which are not created yet. These names should be replaced by "usrRam, usrIndex, usrDisk".

erlang_programming/code/chapter10/usr_db.erl

Line 60 in d6ce507

delete_usr(PhoneNo, CustId) ->