Logical Database Design A primary key is which of the following? 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 An attribute that uniquely identifies each column A derived attribute ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a many-to-many unary relationship into a relation which of the following is true? Two relations are created. 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. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design If no multivalued attributes exist in a relation, then the relation is in what normal form? First normal form Third normal form Second normal form Fourth normal form First normal form Third normal form Second normal form Fourth normal form ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The relational model consists of: data in the form of tables. data redundancy. operations using non-SQL languages. unorganized data. data in the form of tables. data redundancy. operations using non-SQL languages. unorganized data. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design Relations are: five-dimensional tables. two-dimensional tables. four-dimensional tables. three-dimensional tables. five-dimensional tables. two-dimensional tables. four-dimensional tables. three-dimensional tables. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A foreign key may be null and still adhere to the referential integrity constraint. True False True False ANSWER DOWNLOAD EXAMIANS APP
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