Introduction to Database System A computer file contains several records. What does each record contain? Fields Bytes Database Words Fields Bytes Database Words 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 An on-line commercial site such as Amazon.com is an example of a(n) ________ . multiuser database application e-commerce database application single-user database application data mining database application multiuser database application e-commerce database application single-user database application data mining database application ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Entities use identifiers while tables use keys. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A computer file can be best described as a general collection of data items a random collection of data items a single data item an orderly collection of data items None of these a general collection of data items a random collection of data items a single data item an orderly collection of data items None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The _____ command is used to allocates an extent for the table in SQL ALTER TABLE MODIFY ALLOCATES MODIFY TABLE REDEFINE TABLE None of these ALTER TABLE MODIFY ALLOCATES MODIFY TABLE REDEFINE TABLE None of these ANSWER DOWNLOAD EXAMIANS APP