Introduction to Database System A functional dependency is always an equation. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System What is the language used by most of the DBMSs for helping their users to access data? 4GL SQL High level language Query language 4GL SQL High level language Query language 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? Subtype entity Instance entity Archetype entity Supertype entity Subtype entity Instance entity Archetype entity Supertype entity 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) → A → (B,C). A → A → (B,C) → A → (B,C). A → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The physical location of a record is determined by a mathematical formula that transforms a file key into a record location in a sequential file a hashed file a tree file an indexed file None of these a sequential file a hashed file a tree file an indexed file None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If you want to group the records in the abc database, you could use the Jobcode as the _____. Delete Sort Key Update Index Delete Sort Key Update Index ANSWER DOWNLOAD EXAMIANS APP
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