Introduction to Database System The primary key is selected from the: determinants. composite keys. foreign keys. candidate keys. determinants. composite keys. foreign keys. candidate keys. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A computer file can be best described as an orderly collection of data items None of these a random collection of data items a general collection of data items a single data item an orderly collection of data items None of these a random collection of data items a general collection of data items a single data item ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The activity of a file if high, reduces processing efficiency for sequential and nonsequential files refers to how closely the files fits into the allocated is a measure of the percentage of existing records updated during a run is a low percentages of number of records added or deleted from a file None of these if high, reduces processing efficiency for sequential and nonsequential files refers to how closely the files fits into the allocated is a measure of the percentage of existing records updated during a run is a low percentages of number of records added or deleted from a file None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a one-to-many relationship, the entity that is on the one side of the relationship is called a(n) ________ entity. child parent instance subtype child parent instance subtype ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The following are components of a database except ________ . user data reports metadata indexes user data reports metadata indexes ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In which of the following is a single-entity instance of one type of related to a single-entity instance of another type? Many-to-Many Relationship One-to-One Relationship One-to-Many Relationship Composite Relationship Many-to-Many Relationship One-to-One Relationship One-to-Many Relationship Composite Relationship ANSWER DOWNLOAD EXAMIANS APP
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