Logical Database Design An enterprise key is a primary key whose value is unique for a given relation. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A null value is assigned when no other value applies. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a ternary relationship with an associative entity into a relation which of the following is true? One relation is created. Two relations are created. Three relations are created. Four relations are created. One relation is created. Two relations are created. Three relations are created. Four relations are created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key may be null. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a regular entity into a relation which of the following is true? Three relations are created. Four relations are created. Two relations are created. One relation is created. Three relations are created. Four relations are created. Two relations are created. One relation is created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key is which of the following? An attribute that uniquely identifies each column A derived attribute Any attribute An attribute that uniquely identifies each row An attribute that uniquely identifies each column A derived attribute Any attribute An attribute that uniquely identifies each row ANSWER DOWNLOAD EXAMIANS APP
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