/*
Table: ar_history_backup

Columns:
    card_no int
    charges dbms currency
    payments dbms currency
    tdate datetime
    trans_num varchar

Depends on:
    dlog (view)
    ar_history (table)

Depended on by:
Table AR_EOM_Summary

Use:
Stores an extra copy of ar_history

Maintenance:
cron/nightly.ar.php, after updating ar_history,
 truncates and then appends all of ar_history

*//* --COMMENTS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    * 22Oct2012 Eric Lee Add Maintenance: section, add Depended on by:

*/