Introduction to Database System The files stored on a secondary stage device are composed of a hierarchy of data. What does a record in a file contain? None of the listed here Characters Data field Bits None of the listed here Characters Data field Bits 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 database design may be based on existing data. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An indexing operation establishes an index for a file None of the listed here sorts a file using a single key sorts file using two keys establishes an index for a file None of the listed here sorts a file using a single key sorts file using two keys ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relation, the columns are sometimes called "attributes". True False True False 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? Archetype entity Subtype entity Instance entity Supertype entity Archetype entity Subtype entity Instance entity Supertype entity ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS