The more extreme data mart strategy is that of the completely stand alone data mart, the concept being that its fast, easy, cheap, and delivers value immediately. I'm a supporter of this at the desktop level- thats the point of the Datamartist tool afterall.
Sleep studies are tests that record what happens to your body during sleep. The studies are done to find out what is causing your sleep problems. Sleep studies can also determine whether you have a problem with your stages of sleep. The two main types of sleep are non-rapid eye movement (NREM) and rapid eye movement (REM). Normally, NREM and REM alternate 4 to 5 times during a night's sleep.
Care and Treatment for Sleep Disorders. An overnight sleep study, also called a polysomnogram, is a procedure which monitors body functions such as brain waves, heart rate, leg movements and breathing during sleep. You will be monitored by a sleep technologist all night long. There are different types of sleep studies.