3Your Question! (A1)Web mining is the discovery of useful patterns on the Web.TrueFalse
4Your Question! (B2)A grouping of characters into a word, a group of words, or a complete number is called a record.TRUEFALSE
5Your Question! (A3)Every record in a file should contain at least one key field.TRUEFALSE
6Your Question! (C4)Both Oracle and Microsoft Access use SQL to retrieve information from the database.TRUEFALSE
7Your Question! (G3)Both Oracle and Microsoft Access use SQL to retrieve information from the database.TRUEFALSE
8Your Question! (D1)Most back-end databases are able to interpret HTML commands.TRUEFALSE
9Your Question! (I3)Hadoop can process large quantities of any type of data, including video and Twitter feeds.TRUEFALSE
10Your Question! (G6)The two key services of Hadoop are HDFS and in-memory computing.TRUEFALSE
11Your Question! (B1)A data warehouse may include information from legacy systems.TRUEFALSE
12Your Question! (A6)A data warehouse is typically comprised of several smaller data marts.TRUEFALSE
13Your Question! (B3)OLAP is a key tool of BI.TRUEFALSE
14Your Question! (B4)OLAP is used to find hidden patterns and relationships in large databases, and infer rules from these to infer future behavior.TRUEFALSE
15Your Question! (B6)A foreign key is a field that links to a separate table.TRUEFALSE
16Your Question! (I5) MongoDB and SimpleDB are both examples of: Open-source databases.SQL databases.NoSQL databases.Cloud databases.
17Your Question! (B7) An example of a pre-digital database is a: library's card-catalog.cash register receipt.doctor's office invoice.list of sales totals on a spreadsheet.
18Your Question! (I6)What is the first step you should take in managing data for a firm?Identify the data needed to run the businessCleanse the data before importing it to any databaseNormalize the data before importing to a databaseAudit your data quality
19Your Question! (C2)Which of the following best illustrates the relationship between entities and attributes?The entity CUSTOMER with the attribute PRODUCTThe entity CUSTOMER with the attribute ADDRESSThe entity PRODUCT with the attribute PURCHASEThe entity PRODUCT with the attribute CUSTOMER
20Your Question! (H4)The type of logical database model that treats data as if they were stored in two-dimensional tables is the:two-tiered DBMS.pre-digital DBMS.relational DBMS.hierarchical DBMS.
21Your Question! (H7)What are the relationships that the relational database is named for?Relationships between rows and columnsRelationships between entitiesRelationships between fields and recordsRelationships between databases
22Your Question! (A5)A characteristic or quality describing an entity is called a:field.tuple.key field.attribute.
23Your Question! (G7) The most basic business database is comprised of: three tables: for suppliers, parts, and sales.four tables: for customers, suppliers, parts, and sales.four tables: for customers, suppliers, sales, and employees.five tables: for customers, employees, suppliers, parts, and sales.
24Your Question! (C7)In a table for customers, the information about a single customer would reside in a single:field.row.column.table.
25Your Question! (C6)In a relational database, a record is also called a:tuple.row.entity.field.
26Your Question! (H2)A field identified in a table as holding the unique identifier of the table's records is called the:primary key.key field.primary field.foreign key.
27Your Question! (D2)A field identified in a record as holding the unique identifier for that record is called the:primary key.key field.primary field.foreign key.
28Your Question! (G4) In a bus network: signals are broadcast to the next station.signals are broadcast in both directions to the entire network.multiple hubs are organized in a hierarchy.messages pass from computer to computer in a loop.
29Your Question! (D4)A schematic of the entire database that describes the relationships in a database is called a:data dictionary.intersection relationship diagram.entity-relationship diagram.data definition diagram.
30Your Question! (D5)A table that links two tables that have a many-to-many relationship is often called a:derived table.intersection relation.foreign table.entity-relationship table.
31Your Question! (F2)The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called:normalization.data scrubbing.data cleansing.data administration.
32Your Question! (F8) A DBMS makes the: physical database available for different logical views.logical database available for different analytical views.physical database available for different relational views.relational database available for different physical views.
33Your Question! (D8) The logical view of a database: shows how data are organized and structured on the storage media.presents an entry screen to the user.allows the creation of supplementary reports.presents data as they would be perceived by end users.
34Your Question! (E1)Which of the following is not a typical feature of DBMS?Data manipulation languageReport generation toolsData dictionaryQuery wizard tool
35Your Question! (G5) Access is a: DBMS for small handheld computing devices.popular open-source DBMS.DBMS for midrange computers.DBMS for desktop PC systems.
36Your Question! (E3) In clustering, a data mining tool will: find new groupings within data.find related predictions from existing values.find several events grouped by time.find new associations.
37Your Question! (E5) MySQL is a: DBMS for small handheld computing devices.popular open-source DBMS.mainframe relational DBMS.DBMS for desktop systems.
38Your Question? (A-4) Data mining is more ___________ than OLAP. data focusedmultidimensionalquery orienteddiscovery driven
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43Your Question! (E6)In a relational database, the three basic operations used to develop useful sets of data are:select, project, and where.select, join, and where.select, project, and join.select, from, and join.
44Your Question! (E7) The select operation: combines relational tables to provide the user with more information than is otherwise available.creates a subset consisting of columns in a table.identifies the table from which the columns will be selected.creates a subset consisting of all records in the file that meet stated criteria.
45Your Question! (I8)All of the following are tools or technologies for extracting information from unstructured data sets except:sentiment analysis software.SQL queries.Hadoop.Non-relational DBMS.
46Your Question! (H8) The project operation: combines relational tables to provide the user with more information than is otherwise available.creates a subset consisting of columns in a table.organizes elements into segments.identifies the table from which the columns will be selected.
47Your Question! (A2)Which of the following best describes the importance of creating an accurate data model for your business's database?It is not essential, as the data model itself is modified by the database continuously.Critical, as without one, your data may be inaccurate, incomplete, or difficult to retrieveEssential, as table relationships cannot be created without an accurate data modelSomewhat important, as the type of data model will define what kinds of data will be stored
48Your Question! (D3)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:data dictionary.data definition diagram.entity-relationship diagram.relationship dictionary.
49Your Question! (H6)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?one-to-manyone-to-onemany-to-manymany-to-one
50Your Question! (I1)The most prominent data manipulation language today is:Access.DB2.SQL.Crystal Reports.
51Your Question! (I2)DBMS typically include report-generating tools in order to:retrieve and display data.display data in an easier-to-read format.display data in graphs.perform predictive analysis.
52Your Question! (E8)What is the purpose of a DBMS's data definition function?Storing and managing the data in the databaseStoring definitions of data elementsNormalizing the databaseStructuring the database
53Your Question! (F3)Which of the following database types would be best suited for storing multimedia?SQL DBMSOpen-source DBMSNon-relational DBMSCloud-based database
54Your Question! (C1)Pre-configured hardware-software systems that use both relational and non-relational technology optimized for analyzing large datasets are referred to as:Hybrid DBMS.Hadoop.BI.Analytic platforms.
55Your Question! (F5)Which of the following statements about data warehouses is not true?They store supply data to be used across the enterprise for management analysis and decision making.Data warehouse systems provide a range of ad hoc and standardized query tools, analytical tools, and graphical reporting facilities.They may include data from Web site transactions.Data warehouse systems provide easy-to-use tools for managers to easily update data.
56Your Question! (F7)A data mart usually can be constructed more rapidly and at lower cost than a data warehouse because:it typically focuses on a single subject area or line of business.all the information is historical.it uses a Web interface.all of the information belongs to a single company.
57Your Question! (G1)Tools for consolidating, analyzing, and providing access to vast amounts of data to help users make better business decisions are known as:DSS.business intelligence.OLAP.data mining.
58Your Question! (H3)The tool that enables users to view the same data in different ways using multiple dimensions is:Hadoop.SQL.OLAP.data mining.
59Your Question! (D7) OLAP is a tool for enabling: users to obtain online answers to ad hoc questions in a rapid amount of time.users to view both logical and physical views of data.programmers to quickly diagram data relationships.programmers to normalize data.
60Your Question! (A8) Data mining is a tool for allowing users to: quickly compare transaction data gathered over many years.find hidden relationships in data.obtain online answers to ad hoc questions in a rapid amount of time.summarize massive amounts of data into much smaller, traditional reports.
61Your Question! (C5)In terms of the data relationships found by data mining, associations refers to:events linked over time.patterns that describe a group to which an item belongs.occurrences linked to a single event.undiscovered groupings.
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