Introduction to Database System Which of the following is NOT a basic element of all versions of the E-R model? Entities Primary keys Relationships Attributes Entities Primary keys Relationships Attributes ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not a restriction for a table to be a relation? The columns must be ordered. The cells of the table must contain a single value. All of the entries in any column must be of the same kind. No two rows in a table may be identical. The columns must be ordered. The cells of the table must contain a single value. All of the entries in any column must be of the same kind. No two rows in a table may be identical. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A large computer information system maintains many different computer files. Which amongst them is called a perpetual file? Log file Update file Master file Specialized file Log file Update file Master file Specialized file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A file produced by a spreadsheet can be used as it by the DBMS is generally stored on disk in an ASCII text format all of the listed here can be used for graphic can be used as it by the DBMS is generally stored on disk in an ASCII text format all of the listed here can be used for graphic 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 form defines none of the listed here both of the listed here where data is placed on the screen the width of each field none of the listed here both of the listed here where data is placed on the screen the width of each field ANSWER DOWNLOAD EXAMIANS APP
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