Hadoop's two major components are a. a real-time data processor and a framework for data analytics b. a data processing component and a distributed file system c. a JobTracker and a group of TaskTrackers d. a cluster and a group of servers Graph NoSQL databases a. focus on only keys and values b. are well-suited for analyzing interconnections c. store, retrieve, and manage document-related information d. have only two columns How is data governance different from data management? a. Data management is the core component of data governance. b. Data management involves defining processes, whereas data governance does not. c. Data governance is the core component of data management. d. Data governance involves defining processes, whereas data management does not. Why is an effective ETL process essential to data warehousing? a. Small- to medium-sized businesses need a suitable data warehousing option. b. The ETL process removes the necessity for a predefined database schema. c. Horizontal scaling of a relational database enables multiple servers to operate on the data. d. "Dirty data" can result in incorrect or misleading statistics used for decision making. Which statement about maintaining accurate and complete data is true? a. The only source of "bad data" is user data-entry errors. b. Eliminating all "bad data" is a reasonable goal, even on a limited budget. c. Data cleansing may involve standardizing data. d. Data enhancement techniques can fully substitute for data cleansing. What integrated set of functions defines the processes by which data is obtained, certified fit for use, stored, secured, and processed in such a way as to ensure that the accessibility, reliability, and timeliness of the data meet the needs of the data users within an organization? a. data management b. data governance $3 c. data dictionary d. relational database model Which of the following statements is true of a database? a. It is a collection of unstructured data. b. It is accessed only by an organization's database administrator and data administrator. c. It helps companies analyze information to identify new market opportunities. d. It provides an essential foundation for an oiganization's knowledge management and artificial intelligence systems. Data scientists are a necessary component to ensure an organization's business intelligence and analytics efforts are effective because they a. are responsible for making the decisions needed to gain a competitive advantage b. pull together knowledge of the business and data analytics tools and techniques c. certify that data is fit for use and stored, secured, and processed correctly d. supervise the individuals responsible for fixing and preventing issues with data