Introduction to Database System Related fields in a data base are grouped to form menu data record bank data file None of these menu data record bank data file None of these 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. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A computer file can be best described as None of these an orderly collection of data items a single data item a general collection of data items a random collection of data items None of these an orderly collection of data items a single data item a general collection of data items a random collection of data items ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key is a group of one or more attributes that uniquely identifies a row. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The activity of a file 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 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 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 None of these if high, reduces processing efficiency for sequential and nonsequential files ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A top-to-bottom relationship among the items in a database is established by a Relational schema Network schema Hierarchical schema All of the listed here Relational schema Network schema Hierarchical schema All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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