Logical Database Design Well-structured relations encourage anomalies of data. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design Normalization is a formal process for deciding which attributes should be grouped together in a relation. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key is which of the following? An attribute that uniquely identifies each column An attribute that uniquely identifies each row Any attribute A derived attribute An attribute that uniquely identifies each column An attribute that uniquely identifies each row Any attribute A derived attribute ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A composite attribute does not get mapped into a relation. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a binary many-to-many relationship into a relation which of the following is true? Four relations are created. 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. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The entity integrity rule states that: no primary key may be equal to a value in a foreign key. no primary key attribute may be null. no primary key may be unique. no primary key can be composite. no primary key may be equal to a value in a foreign key. no primary key attribute may be null. no primary key may be unique. no primary key can be composite. ANSWER DOWNLOAD EXAMIANS APP
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