Subluxation: Partial dislocation of a joint. A complete dislocation is a luxation.
The largest number of items per content database that has been tested on SharePoint Server 2013 is 60 million items, including documents and list items. If you plan to store more than 60 million items in SharePoint Server 2013, you must deploy multiple content databases.
This client wanted to limit the number of bookings in a classroom, so that each student got a chair to sit on. Only 25 students should be able to book a place in a room with 25 seats. Each classroom has its own SharePoint list, and the first step is to add the maximum number of items to each classroom list. Then I will use the validation settings to make sure no more than the allowed number of items can be used.