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  • Purpose: Tracks charges to clients and amounts received in payment, making it possible to generate statements.


  • 2016-10-18 initial design
  • 2016-10-19 some more timestamps
  • 2016-10-20 void timestamp
  • 2016-10-23 Decided, for multiple reasons, that "owed to us" should be positive and "paid to us" should be negative.
    • Reasons: (1) Name of table is "charge", not "payment"; (2) statement makes more sense in terms of amounts owed to us.


<mysql>CREATE TABLE `charge` (

 `ID`         INT(4)           NOT NULL AUTO_INCREMENT,
 `ID_Proj`    INT(4)           NOT NULL COMMENT "Project to which this session applies",
 `WhenCreated` DATETIME        NOT NULL COMMENT "when this record was created",
 `WhenEdited` DATETIME     DEFAULT NULL COMMENT "when this record was last edited",
 `WhenEffect` DATETIME         NOT NULL COMMENT "effective date of the charge",
 `WhenConfirm` DATETIME     DEFAULT NULL COMMENT "when this charge was confirmed",
 `WhenVoided` DATETIME     DEFAULT NULL COMMENT "when this charge was voided",
 `Amount`     DECIMAL(9,2)     NOT NULL COMMENT "charge amount (pos = owed to us, neg = payment to us)",
 `Sort`       DECIMAL(7,4) DEFAULT NULL COMMENT "sorting order for multiple charges on same date",
 `Code`       VARCHAR(255) DEFAULT NULL COMMENT "identifying numbers, with a prefix (CHK, INVC...)",
 `ID_Invc`    INT(4)       DEFAULT NULL COMMENT "invoice ID, where applicable",
 `Descr`      TEXT         DEFAULT NULL COMMENT "charge summary, for statements",
 `Notes`      TEXT         DEFAULT NULL COMMENT "internal notes, for reference",

) ENGINE=InnoDB;</mysql>