Introduction to Database System Entities can be associated with one another in which of the following? Relationships Entities Identifiers Attributes Relationships Entities Identifiers Attributes ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity? Strong entity ID-independent entity Weak entity ID-dependent entity Strong entity ID-independent entity Weak entity ID-dependent entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Given the functional dependency R → (S,T) , then it is also true that R → S. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An audit trail is the recorded history of operations performed on a file can be used to restore lost information All of the listed here is used to make back-up copies is the recorded history of operations performed on a file can be used to restore lost information All of the listed here is used to make back-up copies ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Prior to 1970, all data was stored in separate files, which were mostly stored on reels of magnetic tape. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A _____ means that one record in a particular record type may be related to more than one record of another record type. Many-to many relationship One-to-many relationship Many-to-one relationship One-to-one relationship Many-to many relationship One-to-many relationship Many-to-one relationship One-to-one relationship ANSWER DOWNLOAD EXAMIANS APP
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