Introduction to Database System The index consists of pointers to the master list None of these All of these a list of keys both (a) and (b) pointers to the master list None of these All of these a list of keys both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relation, the columns are sometimes called "attributes". False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: must always be composed of two or more columns. can only be one column. identifies a row. identifies a column. must always be composed of two or more columns. can only be one column. identifies a row. identifies a column. 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 → (B,C). (B,C) → A → A → A → (B,C). (B,C) → A → A → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A compound key is a combination of each unique key is made up a several pieces of information None of these uniquely identifies an item in a list both (a) and (b) is a combination of each unique key is made up a several pieces of information None of these uniquely identifies an item in a list both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n): insertion anomaly. transitive dependency. referential integrity constraint. normal form. insertion anomaly. transitive dependency. referential integrity constraint. normal form. ANSWER DOWNLOAD EXAMIANS APP
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