ER Assumptions, Having a login name and password when logging in. The flight may have a unique number. The flight sched…

A relationship that represents a relationship between two or more entities is called a relationship. A relationship can…

Common features of data that may exist in a ghost are called attributes. A sub-feature is oval in shape.   The followin…

An independent or clearly identifiable object or person in any organization that may exist in the real  world is c…