Specifying Validity Dates for Characteristics
You can specify validity dates for characteristics. Validity dates can be set for characteristics of all primitive and control types.
Note:
Validity dates are not the same as the date range that you specify when you set a characteristics control type to Calendar.
You do not have to specify both a start and end date. You can specify only one. For example, you can specify a start date but no end date.
To specify validity dates for a characteristic:
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                     From the Studio menu, select Show Design Perspective. 
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                     Click the Dictionary tab. 
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                     Select the data element that you want to tag as a characteristic. The Data Element tab appears in the Data Schema editor. 
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                     Click the Characteristics tab. 
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                     To specify a start date, do the following: - 
                           Select the Start Date check box. 
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                           Enter or select a date on which the characteristic becomes valid. 
 
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                     To specify an end date, do the following: - 
                           Select the End Date check box. 
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                           Enter or select a date after which the characteristic becomes invalid. 
 
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                     From the File menu, select Save.