IS CH 6 – Flashcards
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True
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Web mining is the discovery of useful patterns on the Web
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False
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A grouping of characters into a word, a group of words, or a complete number is called a record.
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True
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Every record in a file should contain at least one key field
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True
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Both Oracle and Microsoft Access use SQL to retrieve information from the database
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True
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DBMS simplify how end users work with databases by separating the logical and physical views of the data
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False
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Most back-end databases are able to interpret HTML commands
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True
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Hadoop can process large quantities of any type of data, including video and Twitter feeds
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False
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The two key services of Hadoop are HDFS and in-memory computing
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True
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A data warehouse may include information from legacy systems
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False
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A data warehouse is typically comprised of several smaller data marts
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True
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OLAP is a key tool of BI
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False
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OLAP is used to find hidden patterns and relationships in large databases, and infer rules from these to infer future behavior.
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True
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A foreign key is a field that links to a separate table
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True
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In-memory computing relies on a computer's main memory for storing data
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False
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Implementing a Web interface for a database requires changes to the database itself.
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True
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Common Gateway Interface is a specification for processing data on a Web server
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False
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In linking databases to the Web, the role of the application server is to host the DBMS
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True
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A firm's information policy lays out who is responsible for updating and maintaining the information in a database system
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False
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The use of different terms for identifying data in a firm's various information systems is an example of redundant data
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True
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Data cleansing is the same process as data scrubbing
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NoSQL databases
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MongoDB and SimpleDB are both examples of
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library card catalog
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An example of a pre-digital database is a:
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Identify the data needed to run the business
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What is the first step you should take in managing data for a firm?
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The entity CUSTOMER with the attribute ADDRESS
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Which of the following best illustrates the relationship between entities and attributes
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relational DBMS
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The type of logical database model that treats data as if they were stored in two-dimensional tables is the
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Relationships between entities
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What are the relationships that the relational database is named for
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attribute
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A characteristic or quality describing an entity is called a(n)
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five tables: for customers, employees, suppliers, parts, and sales
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The most basic business database is comprised of
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row
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In a table for customers, the information about a single customer would reside in a single
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tuple
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In a relational database, a record is also called a(n):
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primary key
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A field identified in a table as holding the unique identifier of the table's records is called the
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key field
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A field identified in a record as holding the unique identifier for that record is called the:
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entity-relationship diagram
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A schematic of the entire database that describes the relationships in a database is called a(n)
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in two short marks
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A one-to-one relationship between two entities is symbolized in a diagram by a line that ends:
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with a crows foot preceded by a short mark
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A one-to-many relationship between two entities is symbolized in a diagram by a line that ends:
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intersection relation
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A table that links two tables that have a many-to-many relationship is often called a(n)
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normalization
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The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called:
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physical database available for different logical views
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A DBMS makes the
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presents data as they would be perceived by end users
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The logical view of a database
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Query wizard tool
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Which of the following is not a typical feature of DBMS
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DBMS for desktop PC systems
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access is a
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find new groupings within data
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In clustering, a data mining tool will
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popular open-source DBMS
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MySQL is a:
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discovery driven
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Data mining is more ________ than OLAP
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select, project, and join
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In a relational database, the three basic operations used to develop useful sets of data are
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creates a subset consisting of all records in the file that meet stated criteria
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The select operation
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SQL queries.
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All of the following are tools or technologies for extracting information from unstructured data sets except
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creates a subset consisting of columns in a table.
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The project operation
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Critical, as without one, your data may be inaccurate, incomplete, or difficult to retrieve
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Which of the following best describes the importance of creating an accurate data model for your business's database
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data dictionary
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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:
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one-to-one
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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
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SQL
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The most prominent data manipulation language today is
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display data in an easier-to-read format
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DBMS typically include report-generating tools in order to
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Structuring the database
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What is the purpose of a DBMS's data definition function
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Non-relational DBMS
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Which of the following database types would be best suited for storing multimedia
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Analytic platforms
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Pre-configured hardware-software systems that use both relational and non-relational technology optimized for analyzing large datasets are referred to as:
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Data warehouse systems provide easy-to-use tools for managers to easily update data
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Which of the following statements about data warehouses is not true
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it typically focuses on a single subject area or line of business
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A data mart usually can be constructed more rapidly and at lower cost than a data warehouse because:
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business intelligence
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Tools for consolidating, analyzing, and providing access to vast amounts of data to help users make better business decisions are known as
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OLAP.
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The tool that enables users to view the same data in different ways using multiple dimensions is:
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users to obtain online answers to ad hoc questions in a rapid amount of time.
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OLAP is a tool for enabling
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find hidden relationships in data
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Data mining is a tool for allowing users to
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occurrences linked to a single event
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In terms of the data relationships found by data mining, associations refers to
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events linked over time
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In terms of the data relationships found by data mining, sequences refers to
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web usage mining
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Which of the following would you use to find patterns in user interaction data recorded by Web servers?
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web structure mining
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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?
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database administration
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Within a corporate information services department, the task of creating the physical database and its logical relations are responsibilities of the ________ function
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text mining
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Businesses use ________ tools to search and analyze unstructured data sets, such as e-mails and memos.
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data redundancy
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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.
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data scrubbing
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Detecting and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called
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referential integrity rules
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Relational database systems use ________ to ensure that relationships between coupled tables remain consistent.
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True
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A DBMS is special software for creating, storing, organizing, and accessing data from a database.
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True
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A physical view shows data as it is organized on the storage media
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True
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End users use a data manipulation language to manipulate data in the database
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open-source software framework designed for distributing data-processing over inexpensive computers.
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Hadoop is a(n):
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warehouse
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A data ________ stores current and historical data of potential interest to decision makers throughout the company.
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database server
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A(n) ________ is a dedicated computer in a client/server environment that hosts a DBMS
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False
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An information policy specifies the procedures and rules for defining the structure and content of corporate databases.
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True
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Data administration is a special organizational function that manages the policies and procedures through which data can be managed as an organizational resource.
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data quality audit
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A(n) ________ is a structured survey of the accuracy and level of completeness of the data in an information system.
