VbzCart/tables/ord change type

About

 * Purpose: Admin-maintained table for different types of order changes and how the order itself is affected by each event of that type
 * Relates to:
 * Background: See
 * History:
 * 2008-12-27 Extracted from main "tables" listing, no design changes; no documentation yet, either
 * 2009-07-12 Removed isActive field; added "Hold" to field names for directional consistency (+1 always turns on an alert); preliminary documentation
 * 2009-10-18
 * changing type for alert flags from TINYINT to TINYINT(1); the default seems to be TINYINT(4)
 * BIT(2) would work, but there doesn't seem to be any clean way to represent -1
 * renaming from ord_event_type to ord_change_type; will eventually replace ord_pull_type
 * Fields:
 * alert flags:
 * doHoldRstk - if TRUE, do not base restock requests on this order's items
 * doHoldChrg - if TRUE, do not make any debits from the customer for this order (wait for confirmation)
 * doContact - if TRUE, contact the customer before proceeding (do we need a separate "no payment" flag?)
 * doExamine - if TRUE, something about this order needs further examination (explanation in event notes)
 * It may be that we need a "doImport" flag, to indicate orders which need importing; doExamine is probably for more complicated issues which may take time/expertise to resolve. On the other hand, it may make more sense to detect un-imported orders in other ways, e.g. the fact that some fields will be NULL -- but it may be useful to have an explicit flag for this, e.g. to be able to signal that an order needs to be re-imported.
 * We may also want a "doHoldShip" flag, to indicate that shipping should be delayed
 * Eventually, maybe we need an ord_action table, listing all the possible actions which might be flagged

alert flags
The alert flag fields each have 3 possible values:
 * 0 = no change
 * +1 = FORBID / TURN ON ALERT
 * -1 = ALLOW / TURN OFF ALERT

Each one affects the corresponding field in the order (not yet implemented as of 2009-07-12) as described above when an event of the type defined in this record occurs

If the order has any one of these flags set, then the order is "on hold".

SQL
CREATE TABLE `ord_change_type` ( `ID`           INT NOT NULL AUTO_INCREMENT,  `Display`      VARCHAR(63) COMMENT "brief name for this event type",  `Descr`        VARCHAR(127) COMMENT "longer description of usage",  `doHoldRstk` TINYINT(1) COMMENT "forbid(+1)/allow(-1) restocking this order's items",  `doHoldChrg` TINYINT(1) COMMENT "forbid(+1)/allow(-1) charging bank card for this order",  `doContact`  TINYINT(1) COMMENT "turn on(+1)/off(-1) need-to-contact flag for this order",  `doExamine`  TINYINT(1) COMMENT "turn on(+1)/off(-1) need-to-examine flag for this order",  PRIMARY KEY(`ID`) ) ENGINE = MYISAM;