Data Models into Database Designs A primary key should be defined as: NULL. NOT NULL. None of these Either of the above can be used. NULL. NOT NULL. None of these Either of the above can be used. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Surrogate keys have much meaning for users. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs (STREET ADDRESS, CITY, STATE, ZIP) is an ideal primary key. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n): surrogate key. composite key. foreign key. primary key. surrogate key. composite key. foreign key. primary key. ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs Which of the following situation requires the use of ID-dependent entities? All of these Association relationships only Archetype/instance relationships only Multivalued attributes only All of these Association relationships only Archetype/instance relationships only Multivalued attributes only ANSWER DOWNLOAD EXAMIANS APP
Data Models into Database Designs For every relationship, how many possible sets of minimum cardinalities are there? Two Four Six Three Two Four Six Three ANSWER DOWNLOAD EXAMIANS APP
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