Field help (AOEOPTDAT)

It defines how the date type fields are coded (order and number of characters for the year).

Only the order of characters and the number of characters in the year can be specified. On the import, any separation characters between fields are filtered ; in this way, the dates in the form 29-05-59 or 09/04/1991 are correctly decoded.

The decoding sub-program takes into account the engine adxdcs variable, doucmented via the DCS parameter that is found in the general parameters in order to define the manner in which a year is decoded over two characters. DCS represents the "pivot" year that defines the century change.

For instance, if DCS is set to 1940, any year made up of two numbers less than or equal to 40 will be considered to be part of the 21st century and any year greater than 40 will be considered to be part of the 20th century. It will therefore be possible to express the years between 1940 and 2039 with two numbers.