Introduction to Database System The relational model uses some unfamiliar terminology. A tuple is equivalent to a field data base record data item field data base record data item 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 None of these a general collection of data items an orderly collection of data items a single data item a random collection of data items None of these a general collection of data items an orderly collection of data items ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System When designing a database, first identify the entities, then determine the attributes, and finally establish the relationships. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A database management system might consist of application programs and a software package called FORTRAN TOTAL AUTOFLOW BPL FORTRAN TOTAL AUTOFLOW BPL ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A scheme describes data elements All of these record relationships None of these records and files data elements All of these record relationships None of these records and files ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The activity of a file if high, reduces processing efficiency for sequential and nonsequential files is a measure of the percentage of existing records updated during a run 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 if high, reduces processing efficiency for sequential and nonsequential files is a measure of the percentage of existing records updated during a run 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 ANSWER DOWNLOAD EXAMIANS APP
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