Logical Database Design A foreign key is which of the following? Any attribute An attribute that serves no purpose An attribute that serves as the primary key of another relation The same thing as a primary key Any attribute An attribute that serves no purpose An attribute that serves as the primary key of another relation The same thing as a primary key ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A transitive dependency is which of the following? A relation that is in second normal form. A relation that is in first normal form. A functional dependency between two or more key attributes. A functional dependency between two or more nonkey attributes. A relation that is in second normal form. A relation that is in first normal form. A functional dependency between two or more key attributes. A functional dependency between two or more nonkey attributes. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key may be null. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The primary key in a relation does not need to be underlined. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a multivalued attribute into a relation which of the following is true? Two relations are created. Three relations are created. One relation is created. Four relations are created. Two relations are created. Three relations are created. One relation is created. Four relations are created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A foreign key may be null and still adhere to the referential integrity constraint. False True False True ANSWER DOWNLOAD EXAMIANS APP
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