Introduction to Database System Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity? Archetype entity Instance entity Supertype entity Subtype entity Archetype entity Instance entity Supertype entity Subtype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A computer file contains several records. What does each record contain? Bytes Database Fields Words Bytes Database Fields Words 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? Composite Relationship 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 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 The data-base environment has all of the following components except: separate files None of these users data base data-base administrator separate files None of these users data base data-base administrator ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System For some relations, changing the data can have undesirable consequences called: modification anomalies. transitive dependencies. normal forms. referential integrity constraints. modification anomalies. transitive dependencies. normal forms. referential integrity constraints. ANSWER DOWNLOAD EXAMIANS APP
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