VbzCart/tables/cust

About

• Purpose: Core customer table – all the other customer data tables point to this one
• Fields:
  • ID_Repl: If non-null, then this customer ID has been consolidated with the customer whose ID is in ID_Repl; whenever/wherever possible, replace occurrences of this ID with the value of the corresponding ID_Repl.
  • WhenCreated: This should be NOT NULL on systems with no legacy data
  • WhenChanged: when the contact's dependent records (address, emails, etc.) were last modified (probably not implemented much)
  • WhenUpdated: When this record was last modified
• History:
  • 2009-07-09 moved to separate wiki page; no design changes
  • 2011-11-29 added WhenUpdated field
  • 2013-10-10 added ID_User and Title fields (see core_users for rules)
  • 2016-06-12 switching definitions of WhenChanged and WhenUpdated
    • Only one record had WhenUpdated set; very few have WhenChanged set.
  • 2019-07-02
    • renamed from "core_custs" to "cust" so it will group with the other customer tables
    • removed NOT NULL constraint on ID_Name because we need to create this record before we create the cust_names record
      • perhaps we can make this unnecessary later with transactions? but it messes with debugging, even so, so maybe we should just put in a post-creation test to make sure all necessary fields got filled in (log data error if not)

SQL

CREATE TABLE `cust` (
  `ID`          INT          NOT NULL AUTO_INCREMENT,
  `ID_Name`     INT      DEFAULT NULL   COMMENT "cust_names.ID of default name",
  `ID_Addr`     INT      DEFAULT NULL   COMMENT "cust_addrs.ID of default address",
  `ID_User`     INT      DEFAULT NULL   COMMENT "core_users.ID of user for this customer",
  `Title`   VARCHAR(127) DEFAULT NULL   COMMENT "user-entered title for this customer profile",
  `Notes`   VARCHAR(255) DEFAULT NULL   COMMENT "admin-entered notes about this customer",
  `ID_Repl`     INT      DEFAULT NULL   COMMENT "core_custs.ID of replacement",
  `WhenCreated` DATETIME   /*NOT NULL*/ COMMENT "when this record was created",
  `WhenUpdated` DATETIME DEFAULT NULL   COMMENT "when this record was last updated",
  `WhenChanged` DATETIME DEFAULT NULL   COMMENT "when this record's dependent data was last edited",
  PRIMARY KEY(`ID`)
)
ENGINE = InnoDB;