A relationship between a set of objects, where making a change to one object affects another object in the set.

a functional relationship between objects, classes, attributes, links, and associations; a statement about some condition or relationship that must be maintained as true

a condition that determines what values an attribute or relationship can or must have

a declaration of a relationship that is to hold between two or more values -- in this case the values that control the size and position of interactor objects

a function that derives the value of one attribute from other attribute values

an object which takes responsibility for keeping a view property set to a certain value

an SQL object that helps define the set of valid values in the table in various ways

a relation between two or more scheduling objects and/or attributes

a sequence of subject, predicate and object that represents an RDF statement

a way to clamp these attributes so when a maximum or minimum value is reached, it won't go any farther

discriminant for a record or a range for a subtype or array index subtype which usually determines the amount of memory the compiler must allocate for objects of the type.