Introduction to Database System Entities of a given type are grouped into a(n): entity class. ER database. attribute. entity class. ER database. attribute. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Queries to a database can use aggregate functions like SUM and COUNT All of these are written in English None of these both (a) and (b) can use aggregate functions like SUM and COUNT All of these are written in English None of these both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If attributes A and B determine attribute C, then it is also true that: A → B → (A,B) is a composite determinant. C is a determinant. A → B → (A,B) is a composite determinant. C is a determinant. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation is in this form if it is in BCNF and has no multivalued dependencies: domain/key normal form. fourth normal form. third normal form. second normal form. domain/key normal form. fourth normal form. third normal form. second normal form. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A computer file can be best described as a random collection of data items None of these a general collection of data items an orderly collection of data items a single data item a random collection of data items None of these a general collection of data items an orderly collection of data items a single data item ANSWER DOWNLOAD EXAMIANS APP
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