0 votes 0 votes Does KEY for an instance makes sense?What is the benefit of it? Databases databases + – Angkit asked Mar 9, 2018 Angkit 282 views answer comment Share Follow See 1 comment See all 1 1 comment reply Tesla! commented Mar 9, 2018 reply Follow Share Yes if multiple system (users) can be active at any given instance 0 votes 0 votes Please log in or register to add a comment.