Most of times a technical user develops a business solution for the use and consumption of a third not-skilled end user. In the contest of self-service capability of Knowage, when business models are available to allow end users to query data, it is possible to arrange time or temporal intervals so that end users can use these time periods to filter data when working with the QbE interface.
Create a new Timespan¶
The Timespan functionality is available under the CATALOGS section of the Knowage main menu.
When clicking on Timespan, the user sees the list of already defined periods, if any. Possible actions are opening, searching, deleting or cloning a specific timespan. The delete and clone icons are available next to the timespan item name.
To add a new timespan item just click on the plus icon on the top right corner of the item list. The technical user is asked to assign a Name and to specify the Type, i.e. if it is a Time or a Temporal period. In case of Time, the start and the end time should be entered otherwise the start and the end date should be entered. There is also the possibility to associate a Category for profiling issues. See the below figure, as an example.
Whatever type is chosen, the technical user defines the start and the end of the interval and has to use the Save icon to insert it. Note that it is possible, for each type, to add more than one interval.
Once that the intervals have been defined they can be used inside the QbE interface to filter time or temportal attributes. For this part, please refer to the Free Inquiry chapter, in particular when dealing with Filters.