Introduction to Database System The only reason for the existence of relations is to store instances of functional dependencies. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation in this form is free of all modification anomalies. First normal form Third normal form Domain/key normal form Second normal form First normal form Third normal form Domain/key normal form Second normal form 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
Introduction to Database System Two files may be joined into a third file if they have no records with the same value in the common field they have a row in common they have a field in common None of these both (b) and (c) they have no records with the same value in the common field they have a row in common they have a field in common None of these both (b) and (c) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Every time attribute A appears, it is matched with the same value of attribute B, but not the same value of attribute C. Therefore, it is true that: A → A → A → (B,C). (B,C) → A → A → A → (B,C). (B,C) → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System With respect to data input, the most accurate description of batch control is comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system None of these dividing documents to be entered into batches controlling the input of each input clerk All of these comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system None of these dividing documents to be entered into batches controlling the input of each input clerk All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS