Introduction to Database System The index consists of None of these pointers to the master list both (a) and (b) a list of keys All of these None of these pointers to the master list both (a) and (b) a list of keys All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier? ID- independent entity Strong entity ID-dependent entity Weak entity ID- independent entity Strong entity ID-dependent entity Weak entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The only reason for the existence of relations is to store instances of functional dependencies. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity? Supertype entity Subtype entity Archetype entity Instance entity Supertype entity Subtype entity Archetype entity Instance entity 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): referential integrity constraint. insertion anomaly. transitive dependency. normal form. referential integrity constraint. insertion anomaly. transitive dependency. normal form. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If you want to organize a file in multiple ways, it is better to _____ the data rather than to sort it. None of these Update Index Sort Key Delete None of these Update Index Sort Key Delete ANSWER DOWNLOAD EXAMIANS APP
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