Introduction to Database System The physical location of a record is determined by a mathematical formula that transforms a file key into a record location in a sequential file a hashed file an indexed file None of these a tree file a sequential file a hashed file an indexed file None of these a tree file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System With respect to data input, the most accurate description of batch control is All of these None of these dividing documents to be entered into batches controlling the input of each input clerk comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system All of these None of these dividing documents to be entered into batches controlling the input of each input clerk comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to select only one copy of each set of duplicable rows SELECT DISTINCT None of these SELECT DIFFERENT SELECT UNIQUE All of these SELECT DISTINCT None of these SELECT DIFFERENT SELECT UNIQUE All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, GRANT command is used to allow user to access databases grant system privileges, roles, and object privileges to uses and roles allow user to create databases None of the listed here allow user to access databases grant system privileges, roles, and object privileges to uses and roles allow user to create databases None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator? Subtype entity Supertype entity Archetype entity Instance entity Subtype entity Supertype entity Archetype entity Instance entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Given the functional dependency R → S , R is called the determinant. False True False True ANSWER DOWNLOAD EXAMIANS APP
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