Logical Database Design Well-structured relations encourage anomalies of data. 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 A derived attribute An attribute that uniquely identifies each row Any attribute An attribute that uniquely identifies each column A derived attribute An attribute that uniquely identifies each row Any attribute 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 supertype/subtype relationship which of the following is true? There is no primary key/foreign key relationship between a supertype/subtype. The supertype primary key is assigned to each subtype. There is no link between the supertype/subtype entities. The subtype primary key is assigned to each supertype. There is no primary key/foreign key relationship between a supertype/subtype. The supertype primary key is assigned to each subtype. There is no link between the supertype/subtype entities. The subtype primary key is assigned to each supertype. 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? Four relations are created. Three relations are created. One relation is created. Two relations are created. Four relations are created. Three relations are created. One relation is created. Two relations are created. 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
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