Introduction to Database System The logical data structure with a one-to-many relationship is a relational tree network chain relational tree network chain ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: must always be composed of two or more columns. identifies a row. can only be one column. identifies a column. must always be composed of two or more columns. identifies a row. can only be one column. identifies a column. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If attribute A determines both attributes B and C, then it is also true that: C → B → A → (B,C) → C → B → A → (B,C) → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A compound key is a combination of each unique key uniquely identifies an item in a list None of these is made up a several pieces of information both (a) and (b) is a combination of each unique key uniquely identifies an item in a list None of these is made up a several pieces of information both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relation, the rows are sometimes called "records". False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which command(s) is(are) used to enable/disable/drop an integrity constraint in SQL? DEFINE TABLE All of the listed here ALTER TABLE MODIFY TABLE DEFINE TABLE All of the listed here ALTER TABLE MODIFY TABLE ANSWER DOWNLOAD EXAMIANS APP