Introduction to Database System Entities use identifiers while tables use keys. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation is considered a: one-dimensional table. two-dimensional table. Column. three-dimensional table. one-dimensional table. two-dimensional table. Column. three-dimensional table. 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 Properties that describe the characteristics of entities are called: attributes. entities. relationships. identifiers. attributes. entities. relationships. identifiers. ANSWER DOWNLOAD EXAMIANS APP
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? Supertype entity Instance entity Subtype entity Archetype entity Supertype entity Instance entity Subtype entity Archetype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to select only one copy of each set of duplicable rows All of these SELECT DISTINCT SELECT UNIQUE SELECT DIFFERENT None of these All of these SELECT DISTINCT SELECT UNIQUE SELECT DIFFERENT None of these ANSWER DOWNLOAD EXAMIANS APP
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