Introduction to Database System In a relation, the order of the columns does not matter. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relational schema, each tuple is divided into fields called Domains Relations Queries All of the listed here Domains Relations Queries All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is a serious problem of file management systems? data redundancy difficult to update program dependence All of these lack of data independence data redundancy difficult to update program dependence All of these lack of data independence ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to select data in rows and column from one or more tables? LIST CHOOSE BROWSE None of these SELECT LIST CHOOSE BROWSE None of these SELECT ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Sort/report generators do not need to sort before generating a report are faster than index/report generators require more disk space than index/report generators none of the listed here do not need to sort before generating a report are faster than index/report generators require more disk space than index/report generators none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The activity of a file 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 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 ANSWER DOWNLOAD EXAMIANS APP
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