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? Subtype entity Archetype entity Supertype entity Instance entity Subtype entity Archetype entity Supertype entity Instance entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relational schema, each tuple is divided into fields called Queries Domains Relations All of the listed here Queries Domains Relations All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following products was an early implementation of the relational model developed by E.F. Codd of IBM? DB2 dBase-II IDMS R:base DB2 dBase-II IDMS R:base ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relation, the columns are sometimes called "attributes". False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Given the functional dependency R → (S,T) , then it is also true that R → S. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If attributes A and B determine attribute C, then it is also true that: A → B → C is a determinant. (A,B) is a composite determinant. A → B → C is a determinant. (A,B) is a composite determinant. ANSWER DOWNLOAD EXAMIANS APP
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