Introduction to Database System In SQL, which of the following is not a data Manipulation Language Commands? DELETE SELECT UPDATE CREATE DELETE SELECT UPDATE CREATE ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A multiple-form file management system lets you define different forms for different operations None of these lets you create a look-up form with an associated read-only password to prevent access by unauthorized users allow you to entry data in all the forms both (a) and (b) lets you define different forms for different operations None of these lets you create a look-up form with an associated read-only password to prevent access by unauthorized users allow you to entry data in all the forms both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The activity of a file is a measure of the percentage of existing records updated during a run refers to how closely the files fits into the allocated if high, reduces processing efficiency for sequential and nonsequential files None of these 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 refers to how closely the files fits into the allocated if high, reduces processing efficiency for sequential and nonsequential files None of these is a low percentages of number of records added or deleted from a file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The primary key is selected from the: composite keys. candidate keys. determinants. foreign keys. composite keys. candidate keys. determinants. foreign keys. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The files stored on a secondary stage device are composed of a hierarchy of data. What does a record in a file contain? Characters None of the listed here Bits Data field Characters None of the listed here Bits Data field ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An identifier typically uses more than one attribute. False True False True ANSWER DOWNLOAD EXAMIANS APP
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