Introduction to Database System Keys made up of two or more attributes are called composite keys. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity is related to two or more associated entities that each contain specialized attributes that apply to some but not all of the instances of the entity? Instance entity Archetype entity Subtype entity Supertype entity Instance entity Archetype entity Subtype entity Supertype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity? Instance entity Subtype entity Supertype entity Archetype entity Instance entity Subtype entity Supertype entity Archetype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Prior to 1970, all data was stored in separate files, which were mostly stored on reels of magnetic tape. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation in this form is free of all modification anomalies. Second normal form First normal form Domain/key normal form Third normal form Second normal form First normal form Domain/key normal form Third normal form ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity. parent subtype instance child parent subtype instance child ANSWER DOWNLOAD EXAMIANS APP
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