Introduction to Database System If attribute A determines both attributes B and C, then it is also true that: A → (B,C) → C → B → A → (B,C) → C → B → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A recursive relationship is a relationship between an archetype and an instance of that archetype. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A recursive relationship is a relationship between an entity and ________ . an instance entity an archetype entity a subtype entity itself an instance entity an archetype entity a subtype entity itself ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A data dictionary is a special file that contains the data types of all fields in all files the widths of all fields in all files All of these None of these the names of all fields in all files the data types of all fields in all files the widths of all fields in all files All of these None of these the names of all fields in all files ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which command is used to remove an index from the database in SQL? REMOVE INDEX DROP INDEX DELETE INDEX ROLL BACK INDEX REMOVE INDEX DROP INDEX DELETE INDEX ROLL BACK INDEX ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation is a two-dimensional table. False True False True ANSWER DOWNLOAD EXAMIANS APP