Introduction to Database System If attribute A determines both attributes B and C, then it is also true that: A → (B,C) → B → C → A → (B,C) → B → C → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System One solution to the multivalued dependency constraint problem is to: change the theme. split the relation into two relations, each with a single theme. create a new theme. add a composite key. change the theme. split the relation into two relations, each with a single theme. create a new theme. add a composite key. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A multiple-form file management system lets you define different forms for different operations allow you to entry data in all the forms None of these both (a) and (b) lets you create a look-up form with an associated read-only password to prevent access by unauthorized users lets you define different forms for different operations allow you to entry data in all the forms None of these both (a) and (b) lets you create a look-up form with an associated read-only password to prevent access by unauthorized users 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? Archetype entity Supertype entity Subtype entity Instance entity Archetype entity Supertype entity Subtype entity Instance entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The relational database model was created by E.F. Codd. False True False True 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? SQL High level language 4GL Query language SQL High level language 4GL Query language ANSWER DOWNLOAD EXAMIANS APP
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