Introduction to Database System Which of the following contains a complete record of all activity that affected the contents of a database during a certain period of time? transaction log data manipulation language report writer query language None of these transaction log data manipulation language report writer query language None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A logical schema is a standard way of organizing information into accessible parts None of these describes how data is actually stored on disk is the entire database All of these is a standard way of organizing information into accessible parts None of these describes how data is actually stored on disk is the entire database All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A primary key is a composite key that was selected to be the main identifier for the relation. True False True False 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 if high, reduces processing efficiency for sequential and nonsequential files None of these is a measure of the percentage of existing records updated during a run 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 None of these is a measure of the percentage of existing records updated during a run refers to how closely the files fits into the allocated ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following products was an early implementation of the relational model developed by E.F. Codd of IBM? dBase-II R:base IDMS DB2 dBase-II R:base IDMS DB2 ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Applications are programs that interact directly with the database. True False True False ANSWER DOWNLOAD EXAMIANS APP
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