Introduction to Database System If attribute A determines both attributes B and C, then it is also true that: (B,C) → A → B → C → (B,C) → A → B → C → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In which of the following is a single-entity instance of one type of related to a single-entity instance of another type? One-to-Many Relationship Many-to-Many Relationship One-to-One Relationship Composite Relationship One-to-Many Relationship Many-to-Many Relationship One-to-One Relationship Composite Relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Periodically adding, changing and deleting file records is called file renewing upgrading restructuring Updating renewing upgrading restructuring Updating ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: identifies a row. identifies a column. must always be composed of two or more columns. can only be one column. identifies a row. identifies a column. must always be composed of two or more columns. can only be one column. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key is a group of one or more attributes that uniquely identifies a row. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An attribute that names or identifies entity instances is a(n): identifier. relationship. entity. attribute. identifier. relationship. entity. attribute. ANSWER DOWNLOAD EXAMIANS APP
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