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. True False True False ANSWER DOWNLOAD EXAMIANS APP
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? Characters Data field Bits None of the listed here Characters Data field Bits None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System It is more accurate to define a _____ as a variety of different record types that are treated as a single unit Record None of these Table Database Flat File Record None of these Table Database Flat File ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Each of data files has a _____ that describe the way the data is stored in the file. File structure Fields Database Records File structure Fields Database Records ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A computer file can be best described as a single data item a random collection of data items an orderly collection of data items a general collection of data items None of these a single data item a random collection of data items an orderly collection of data items a general collection of data items None of these 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? Subtype entity Supertype entity Instance entity Archetype entity Subtype entity Supertype entity Instance entity Archetype entity ANSWER DOWNLOAD EXAMIANS APP
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