Introduction to Database System The activity of a file None of these 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 if high, reduces processing efficiency for sequential and nonsequential files refers to how closely the files fits into the allocated None of these 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 if high, reduces processing efficiency for sequential and nonsequential files refers to how closely the files fits into the allocated ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity represents an actual occurrence of an associated generalized entity? Instance entity Subtype entity Supertype entity Archetype entity Instance entity Subtype entity Supertype entity Archetype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The following are components of a database except ________ . user data reports indexes metadata user data reports indexes metadata ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation has cells that hold multi-value entries. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Queries to a database are written in English can use aggregate functions like SUM and COUNT None of these All of these both (a) and (b) are written in English can use aggregate functions like SUM and COUNT None of these All of these both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A recursive relationship is a relationship between an entity and ________ . an archetype entity a subtype entity an instance entity itself an archetype entity a subtype entity an instance entity itself ANSWER DOWNLOAD EXAMIANS APP
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