WGU C175 Final Exam |Question and Answer| 100% Correct

WGU C175 Final Exam |Question and Answer| 100% Correct What is a broad definition of data? *Ans* Raw facts that are captured on printed or digital media What are data? *Ans* Facts that are collected and stored in a database system What is a determining characteristic of unstructured data? *Ans* It does not follow a data model. Which is true about flat files? *Ans* They contain no internal hierarchical organization. Which technology has no internal hierarchy? *Ans* Flat files How were data retrieved before database management systems? *Ans* Sequentially from simple files In which two ways does a database management system environment increase effectiveness in working with data? *Ans* - It enables data sharing, - It permits storage of vast volumes of data. What is the uniquely identifiable element about which data can be categorized in an entityrelationship diagram? *Ans* Entity types Which classification is correct for the box marked "Quantity" in the given entityrelationship diagram? *Ans* Intersection data Which data classification is an entity? *Ans* Event A salesperson is authorized to sell 12 products; a product can be sold by 10 salespersons. Which kind of binary relationship is described in this example? *Ans* Many-to-many Which three kinds of rules for referential integrity are provided by modern relational database management systems? *Ans* Insert, Delete, Update What is an important aspect of "referential integrity"? *Ans* Reference to data in one relation is based on values in another relation. Sales data, detailing the customer names, products sold, and salespersons, is kept in a database. Which kind of data in this database would qualify as intersection data related to both the product and salesperson entities? *Ans* Cus