The Interval Summary from Data Warehouse model offers date selection based on the Date (LMRKDATE) and time (TIMEINTVL, ENDINTVL) fields and works with selection windows.
A selection window is an intersection of date and time coordinates. Think of the time as a two dimensional grid with the dates on the X axis and the hours of the day on the Y axis. Imagine that your database contains information for the entire year and you want to view all the information collected between July 4 and October 14 during peak work hours (9:00AM to 2:30PM)
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