The entity set person is classified as student and employee. This process is called

Related MCQs

• There are similarities between the instructor entity set and the secretary entity set in the sense that they have several attributes that are conceptually the same across the two entity sets: namely, the identifier, name, and salary attributes. This process is called
• If an entity set is a lower-level entity set in more than one ISA relationship, then the entity set has
• An entity in A is associated with at most one entity in B, and an entity in B is associated with at most one entity in A.This is called as
• Consider the employee work-team example, and assume that certain employees participate in more than one work team. A given employee may therefore appear in more than one of the team entity sets that are lower level entity sets of employee. Thus, the generalization is                            
• For a weak entity set to be meaningful, it must be associated with another entity set, called the
• For a weak entity set to be meaningful, it must be associated with another entity set, called the
• An entity in A is associated with at most one entity in B. An entity in B, however, can be associated with any number (zero or more) of entities in A.
• Every weak entity set can be converted into a strong entity set by:
• The refinement from an initial entity set into successive levels of entity subgroupings represents a                  design process in which distinctions are made explicit.
• Consider a directed line(->) from the relationship set advisor to both entity sets instructor and student. This indicates _________ cardinality