Introduction to Database System Which type of entity is related to two or more associated entities that each contain specialized attributes that apply to some but not all of the instances of the entity? Subtype entity Supertype entity Instance entity Archetype entity Subtype entity Supertype entity Instance entity Archetype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An identifier typically uses more than one attribute. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A database design may be based on existing data. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An indexing operation None of the listed here sorts a file using a single key sorts file using two keys establishes an index for a file None of the listed here sorts a file using a single key sorts file using two keys establishes an index for a file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to add a column/integrity constraint to a table MODIFY TABLE ADD COLUMN INSERT COLUMN ALTER TABLE MODIFY TABLE ADD COLUMN INSERT COLUMN ALTER TABLE ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A scheme describes All of these None of these records and files record relationships data elements All of these None of these records and files record relationships data elements ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS