Logical Database Design The relational model consists of: unorganized data. data redundancy. data in the form of tables. operations using non-SQL languages. unorganized data. data redundancy. data in the form of tables. operations using non-SQL languages. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A primary key may be null. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A foreign key is which of the following? The same thing as a primary key An attribute that serves no purpose An attribute that serves as the primary key of another relation Any attribute The same thing as a primary key An attribute that serves no purpose An attribute that serves as the primary key of another relation Any attribute ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a multivalued attribute into a relation which of the following is true? One relation is created. 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. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A composite attribute does not get mapped into a relation. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A relation has which of the following properties? Each relation has a unique name. The order of the columns is significant. Each row is not unique. Attributes can have the same name within a given table. Each relation has a unique name. The order of the columns is significant. Each row is not unique. Attributes can have the same name within a given table. ANSWER DOWNLOAD EXAMIANS APP
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