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1.10 Date Definitions
Date Definitions are used to mark dates which are significant to your
batch processing. These dates may be company observed holidays, fiscal
periods, etc. You should be careful when defining these dates since
they are used to schedule (or not schedule) Jobs, and they are used to
create the defaults for dates used as parameters to Jobs. If your Data
Center operates 365 days a year and schedules jobs based on calender
months, you do not need to define any special dates.
There are two types of significant dates. One type marks a single day as having some importance. The second type marks the beginning of a period. If the Date Type of the date you are defining is a continuous Date Type, then any dates which you define mark the beginning of a new period. If the Date Type is not continuous, then the date marks a single significant date. Refer to Section 1.9 for information on defining Date Types.
This identifies the Date Type of the date which you are defining. Every Date definition must be associated with a Date Type, but the same date may be associated with more than one Date Type.
Date Types are user defined. Refer to the Configuration menu option for information on defining Date Types.
This is the date you are defining. If the Date Type you specified is a continuous Date Type, then this date represents the first day of a period, otherwise it represents a single significant date.
This field represents the specific name of the date you are defining. This field is not required. However, if you specify a value, it must be one of the values defined in the Date Type's definition.
This field is significant when you want to refer to a specific instance of a Date Type. If you want to schedule a job to run on Christmas, you could define a Date Type of HOLIDAY with a Specific Date Type of CHRISTMAS.
For a continuous Date Type, such as a fiscal period, this field can be used to name each period. Generally fiscal periods correspond to calender months so you could use Specific Date Types such as JAN, FEB, MAR etc. This would allow you to enter a date specification such as "2ND MONDAY OF FISCAL APR".
The description should be used to accurately identify this date definition. It is for reference purposes only.
You have three options for this field: Y (yes), N (no), or space which means "maybe". When JAMS needs to know if a date is a workday, first it looks at the date definitions for the date in question. If it finds one with either a Y or an N in this field, it stops checking and has the answer. (Y means yes this is a workday, N means no this is not a workday). If none of the date definitions for this date specify Y or N (or there are no definitions for this date), then JAMS checks the configuration to see if the day of the week on which this date falls is normally a workday.
Normally, you should leave this field blank unless one of the reasons for creating the date definition is to change the workday status. Be careful because if you create two definitions for the same date, one that says Yes this is a workday and one that says No this is not a workday, JAMS will stop checking when it finds the first definition.
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