CH. 6

31) A field identified in a table as holding the unique identifier of the table's records is called the:

A) primary key.

30) In a relational database, a record is also called a(n):

A) tuple.

61) OLAP is a tool for enabling:

A) users to obtain online answers to ad hoc questions in a rapid amount of time.

76) A data ________ stores current and historical data of potential interest to decision makers throughout the company.

A) warehouse

49) Which of the following best describes the importance of creating an accurate data model for your business's database?

B) Critical, as without one, your data may be inaccurate, incomplete, or difficult to retrieve

26) What are the relationships that the relational database is named for?

B) Relationships between entities

47) All of the following are tools or technologies for extracting information from unstructured data sets except:

B) SQL queries.

24) Which of the following best illustrates the relationship between entities and attributes?

B) The entity CUSTOMER with the attribute ADDRESS

59) Tools for consolidating, analyzing, and providing access to vast amounts of data to help users make better business decisions are known as:

B) business intelligence.

48) The project operation:

B) creates a subset consisting of columns in a table.

69) The confusion created by ________ makes it difficult for companies to create customer relationship management, supply chain management, or enterprise systems that integrate data from different sources

B) data redundancy

53) DBMS typically include report-generating tools in order to:

B) display data in an easier-to-read format.

62) Data mining is a tool for allowing users to:

B) find hidden relationships in data.

36) A table that links two tables that have a many-to-many relationship is often called a(n):

B) intersection relation.

32) A field identified in a record as holding the unique identifier for that record is called the:

B) key field.

51) You are working in the IT department of a small paper supply company and planning a new database that monitors employee benefits and productivity. What would be the relationship you need to establish between Employee_ID in the Employee table and Parking_spot_number in the Perks table?

B) one-to-one

43) MySQL is a:

B) popular open-source DBMS.

71) Relational database systems use ________ to ensure that relationships between coupled tables remain consistent.

B) referential integrity rules

29) In a table for customers, the information about a single customer would reside in a single:

B) row.

21) MongoDB and SimpleDB are both examples of:

C) NoSQL databases.

55) Which of the following database types would be best suited for storing multimedia?

C) Non-relational DBMS

60) The tool that enables users to view the same data in different ways using multiple dimensions is:

C) OLAP.

52) The most prominent data manipulation language today is:

C) SQL.

66) Which of the following would you use to find out which Web sites with content related to database design were the most often linked to by other Web sites?

C) Web structure mining

70) Detecting and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called:

C) data scrubbing.

77) A(n) ________ is a dedicated computer in a client/server environment that hosts a DBMS.

C) database server

33) A schematic of the entire database that describes the relationships in a database is called a(n):

C) entity-relationship diagram.

63) In terms of the data relationships found by data mining, associations refers to:

C) occurrences linked to a single event.

75) Hadoop is a(n):

C) open-source software framework designed for distributing data-processing over inexpensive computers.

25) The type of logical database model that treats data as if they were stored in two-dimensional tables is the:

C) relational DBMS.

45) In a relational database, the three basic operations used to develop useful sets of data are:

C) select, project, and join.

68) Businesses use ________ tools to search and analyze unstructured data sets, such as e-mails and memos.

C) text mining

56) Pre-configured hardware-software systems that use both relational and non-relational technology optimized for analyzing large datasets are referred to as:

D) Analytic platforms.

41) Access is a:

D) DBMS for desktop PC systems.

57) Which of the following statements about data warehouses is not true?

D) Data warehouse systems provide easy-to-use tools for managers to easily update data.

40) Which of the following is not a typical feature of DBMS?

D) Query wizard tool

54) What is the purpose of a DBMS's data definition function?

D) Structuring the database

27) A characteristic or quality describing an entity is called a(n):

D) attribute.

46) The select operation:

D) creates a subset consisting of all records in the file that meet stated criteria.

44) Data mining is more ________ than OLAP.

D) discovery driven

28) The most basic business database is comprised of:

D) five tables: for customers, employees, suppliers, parts, and sales.

39) The logical view of a database:

D) presents data as they would be perceived by end users.

35) A one-to-many relationship between two entities is symbolized in a diagram by a line that ends:

D) with a crow's foot preceded by a short mark.

38) A DBMS makes the:

A) physical database available for different logical views.

23) What is the first step you should take in managing data for a firm?

A) Identify the data needed to run the business

65) Which of the following would you use to find patterns in user interaction data recorded by Web servers?

A) Web usage mining

50) An automated or manual file that stores information about data elements and data characteristics such as usage, physical representation, ownership, authorization, and security is the:

A) data dictionary.

80) A(n) ________ is a structured survey of the accuracy and level of completeness of the data in an information system.

A) data quality audit

67) Within a corporate information services department, the task of creating the physical database and its logical relations are responsibilities of the ________ function.

A) database administration

64) In terms of the data relationships found by data mining, sequences refers to:

A) events linked over time.

42) In clustering, a data mining tool will:

A) find new groupings within data.

34) A one-to-one relationship between two entities is symbolized in a diagram by a line that ends:

A) in two short marks.

58) A data mart usually can be constructed more rapidly and at lower cost than a data warehouse because:

A) it typically focuses on a single subject area or line of business.

22) An example of a pre-digital database is a:

A) library's card-catalog.

37) The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called:

A) normalization.