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70 terms

MIS Exam 1

STUDY
PLAY
True
Each characteristic or quality describing a particular entity is called an attribute.
False
A grouping of characters into a word, a group of words, or a complete number is called a record.
True
Every record in a file should contain at least one key field.
True
In normalization, complex groupings of data are streamlined to eliminate awkward
many-to-many relationships.
True
DBMS simplify how end users work with databases by separating the logical and physical views
of the data.
True
Many applications today require databases that can store and retrieve multimedia.
False
One of the drawbacks to OODBMS is that they cannot work with applets.
True
OODBMS are slower than relational DBMS.
True
A data warehouse may include information from legacy systems.
False
A data warehouse is typically comprised of several smaller data marts.
True
OLAP is a key tool of BI.
False
OLAP is used to find hidden patterns and relationships in large databases, and infer rules from
these to infer future behavior.
True
Data mining can be a challenge to individual privacy.
False
Predictive analysis is a technique of data mining.
False
Implementing a Web interface for a database requires changes to the database its
True
Common Gateway Interface is a specification for processing data on a Web server.
False
I n linking databases to the Web, the role of the application server is to host the DBMS.
True
A firm's information policy lays out who is responsible for updating and maintaining the
information in a database system.
True
The use of different terms for identifying data in a firm's various information systems is an
example of redundant data.
True
Data cleansing is the same process as data scrubbing.
It is a quality-of-data concept that is used to identify a companyʹs most important data.
Which of the following is not a true statement about MDM?
I dentify the data needed to run the business
What is the first step you should take in managing data for a firm?
library's card-catalog.
An example of a pre-digital database is a:
The entity CUSTOMER with the attribute ADDRESS
Which of the following best illustrates the relationship between entities and attributes?
relational DBMS.
The type of logical database model that treats data as if they were stored in two-dimensional
tables is the:
Relationships between entities
What are the relationships that the relational database is named for?
attribute
A characteristic or quality describing an entity is called a(n):
five tables: for customers, employees, suppliers, products, and sales.
The most basic business database is comprised of
row
In a table for customers, the information about a single customer would reside in a single:
tuple.
In a relational database, a record is also called a(n):
primary key.
A field identified in a table as holding the unique identifier of the table's records is called the:
key field
A field identified in a record as holding the unique identifier for that record is called the
entity-relationship diagram.
A schematic of the entire database that describes the relationships in a database is called a(n):
in two short marks.
A one-to-one relationship between two entities is symbolized in a diagram by a line that ends:
with a crow's foot preceded by a short mark.
A one-to-many relationship between two entities is symbolized in a diagram by a line that ends:
intersection relation.
A table that links two tables that have a many-to-many relationship is often called a(n)
normalization.
The process of streamlining data to minimize redundancy and awkward many-to-many
relationships is called
physical database available for different logical views
A DBMS makes the
presents data as they would be perceived by end users.
The logical view of a database
Query wizard tool
Which of the following is not a typical feature of DBMS?
DBMS for small handheld computing devices.
Oracle Database Lite is a
DBMS for desktop systems
Access is a:
popular open-source DBMS.
MySQL is a
DBMS for midrange computers.
Microsoft SQL Server is a(n):
select, project, and join
In a relational database, the three basic operations used to develop useful sets of data are
creates a subset consisting of all records in the file that meets stated criteria
The select operation:
combines relational tables to provide the user with more information than is otherwise
available
The join operation
creates a subset consisting of columns in a table
The project operation:
creating an inventory of data definitions contained in the database
The data dictionary serves as an important data management tool by
data dictionary.
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 manipulation language.
The specialized language programmers use to add and change data in the database is called
SQL.
The most prominent data manipulation language today is:
display data in an easier-to-read format
DBMS typically include report-generating tools in order to:
object-oriented DBMS
The type of database management approach that can handle multimedia is the
OODBMS
Which of the following database types is useful for storing Java applets as well as handling large
numbers of transactions?
both historical and current data
A data warehouse is composed of:
Data warehouse systems provide easy-to-use tools for managers to easily update data.
Which of the following statements about data warehouses is not true?
it typically focuses on a single subject area or line of business
A data mart usually can be constructed more rapidly and at lower cost than a data warehouse
because
business intelligence
Tools for consolidating, analyzing, and providing access to vast amounts of data to help users
make better business decisions are known as
OLAP.
The tool that enables users to view the same data in different ways using multiple dimensions is
users to obtain online answers to ad hoc questions in a rapid amount of time.
OLAP is a tool for enabling
find hidden relationships in data
Data mining is a tool for allowing users to
occurrences linked to a single event
In terms of the data relationships found by data mining, associations refers to
events linked over time
In terms of the data relationships found by data mining, sequences refers to
HTML
An alternative to using application server software for interfacing between a Web server and
back-end databases is
text mining
Businesses use ________ tools to search and analyze unstructured data sets, such as e-mails and
memos
data redundancy
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.
data scrubbing
Detecting and correcting data in a database or file that are incorrect, incomplete, improperly
formatted, or redundant is called
Web usage mining
Which of the following would you use to find patterns in user interaction data recorded by Web
servers?
Web structure mining
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?