Prevent overlapping date periods in SharePoint list items

In this InfoPath video you'll see how you can use validation rules in a SharePoint list form to prevent items with overlapping date and time periods from being added to a SharePoint list.

In recipe 53 of InfoPath 2013 Cookbook 2, you'll learn how to use data validation on items in a SharePoint list to prevent duplicate or overlapping date and time periods from being added to the SharePoint list through a SharePoint list form.

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InfoPath demo video transcript:

Here I'm in SharePoint 2013, where I've got this RoomReservations SharePoint list that contains these 3 list items. The basic idea is that I would like to enter items into this SharePoint list and then what I don't want is that whatever period, time period I select, I don't want it to overlap with existing time periods for a particular room.

 

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InfoPath 2013 Cookbook 2: 121 Codeless Recipes for SharePoint 2013