Introduction to Database System Entity instances are associated by relationship classes. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The data-base environment has all of the following components except: None of these separate files data base users data-base administrator None of these separate files data base users data-base administrator ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The _____ command is used to allocates an extent for the table in SQL MODIFY ALLOCATES ALTER TABLE None of these REDEFINE TABLE MODIFY TABLE MODIFY ALLOCATES ALTER TABLE None of these REDEFINE TABLE MODIFY TABLE 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? Strong entity ID- independent entity Weak entity ID-dependent entity Strong entity ID- independent entity Weak entity ID-dependent entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If attribute A determines both attributes B and C, then it is also true that: B → A → (B,C) → C → B → A → (B,C) → C → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A functional dependency is a relationship between or among: relations. rows. tables. attributes. relations. rows. tables. attributes. ANSWER DOWNLOAD EXAMIANS APP
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