Introduction to Database System In the relational model, relationships between relations or tables are created by using: candidate keys. determinants. foreign keys. composite keys. candidate keys. determinants. foreign keys. composite keys. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An indexing operation sorts file using two keys None of the listed here sorts a file using a single key establishes an index for a file sorts file using two keys None of the listed here sorts a file using a single key establishes an index for a file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If attributes A and B determine attribute C, then it is also true that: B → A → C is a determinant. (A,B) is a composite determinant. B → A → C is a determinant. (A,B) is a composite determinant. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An on-line commercial site such as Amazon.com is an example of a(n) ________ . single-user database application multiuser database application e-commerce database application data mining database application single-user database application multiuser database application e-commerce database application data mining database application ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Entities can be associated with one another in which of the following? Attributes Identifiers Entities Relationships Attributes Identifiers Entities Relationships ANSWER DOWNLOAD EXAMIANS APP