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 Large collections of files are called fields None of these databases file system records fields None of these databases file system records ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not a logical data-base structure? network tree relational chain network tree relational chain ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System With respect to data input, the most accurate description of batch control is dividing documents to be entered into batches None of these comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system controlling the input of each input clerk All of these dividing documents to be entered into batches None of these comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system controlling the input of each input clerk All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Two files may be joined into a third file if they have no records with the same value in the common field None of these they have a field in common they have a row in common both (b) and (c) they have no records with the same value in the common field None of these they have a field in common they have a row in common both (b) and (c) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: 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. must always be composed of two or more columns. ANSWER DOWNLOAD EXAMIANS APP
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