Introduction to Database System An attribute that names or identifies entity instances is a(n): entity. attribute. identifier. relationship. entity. attribute. identifier. relationship. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System When performing a look-up operation using a form you enter the search value into the form All of these None of these you type the key in an entry line, and the correct form is displayed you look at each form sequentially until you see the one you want you enter the search value into the form All of these None of these you type the key in an entry line, and the correct form is displayed you look at each form sequentially until you see the one you want ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Prior to 1970, all data was stored in separate files, which were mostly stored on reels of magnetic tape. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Given the functional dependency R → (S,T) , then it is also true that R → S. False True False True 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-dependent entity Strong entity Weak entity ID- independent entity ID-dependent entity Strong entity Weak entity ID- independent entity ANSWER DOWNLOAD EXAMIANS APP
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