Introduction to Database System An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Periodically adding, changing and deleting file records is called file restructuring Updating renewing upgrading restructuring Updating renewing upgrading ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to add new rows to a table? INSERT ADD ROW APPEND ALTER TABLE INSERT ADD ROW APPEND ALTER TABLE ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator? Instance entity Supertype entity Subtype entity Archetype entity Instance entity Supertype entity Subtype entity Archetype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In which of the following is a single-entity instance of one type related to many entity instances of another type? Many-to-Many Relationship One-to-Many Relationship One-to-One Relationship Composite Relationship Many-to-Many Relationship One-to-Many Relationship One-to-One Relationship Composite Relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: must always be composed of two or more columns. can only be one column. identifies a column. identifies a row. must always be composed of two or more columns. can only be one column. identifies a column. identifies a row. ANSWER DOWNLOAD EXAMIANS APP
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