Introduction to Database System A database management system None of the listed here allows simultaneous access to multiple files Both of the listed here can do more than a record management system None of the listed here allows simultaneous access to multiple files Both of the listed here can do more than a record management system ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The data dictionary tells the DBMS what attribute are possessed by the data what these files contain All of the listed here what files are in the database what attribute are possessed by the data what these files contain All of the listed here what files are in the database ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator? Supertype entity Instance entity Archetype entity Subtype entity Supertype entity Instance entity Archetype entity Subtype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The activity of a file is a low percentages of number of records added or deleted from a file is a measure of the percentage of existing records updated during a run if high, reduces processing efficiency for sequential and nonsequential files None of these refers to how closely the files fits into the allocated is a low percentages of number of records added or deleted from a file is a measure of the percentage of existing records updated during a run if high, reduces processing efficiency for sequential and nonsequential files None of these refers to how closely the files fits into the allocated ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A computer file can be best described as a random collection of data items an orderly collection of data items None of these a general collection of data items a single data item a random collection of data items an orderly collection of data items None of these a general collection of data items a single data item ANSWER DOWNLOAD EXAMIANS APP
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