Glb.Century_Start is a read-writable built-in segment attribute that is used in conjunction with the DateConvert logic command. It specifies how six-digit dates (those without an explicit century) are to be interpreted. Glb.Century_Start defines the first year of a 100 year period, so that all six-digit dates are interpreted as being in that period.
Glb.Century_Start is set using the segment's Century Start Year property. If this property is not set, Glb.Century_Start is set to the base year specified by the Glb.Base built-in segment attribute.
Glb.Century_Start can be set to any year between 0001 and 9899, but it cannot be less than the base year defined by Glb.Base.
If Glb.Century_Start is not set explicitly in logic or as a result of a previous calculation, Glb.Century_Start is used to determine the century of a six-digit date for the:
Complex variant of the DateConvert logic command
Date validation operation
Glb.Century_Start is initialized at the start of each ispec or report.
Refer to Glb.Base, Glb.Century, Glb.DC_CC, and DateConvert for more information.
Properties
Length = 4
Primitive = Number