OLAP is a tool for enabling 1) Users to obtain online answers to ad-hoc questions in a rapid amount of time. 2) Users to view both logical and physical views of data 3) programmers to quickly diagram data relationships. 4) programmers to normalize data
Users to obtain online answers to ad-hoc questions in a rapid amount of time.
The most prominent data manipulation language today is - Access - DB2 - SQL - Crystal Reports
Many applications today require databases that can store and retrieve multimedia. - True - False
__________ tools are used to analyze large unstructured data sets, such as e-mail, memos, survey responses, etc., to discover patterns and relationships. - OLAP - Text Mining - Web mining - Web content mining
Data administration is a special organizational function that manages the policies and procedures through which data can be managed as an organizational resource - True - False
Common Gateway Interface is a specification for processing data on a Web server - True - False
Tools for consolidating, analyzing, and providing access to vast amounts of data to help users make better business decisions are know as - DSS - Business intelligence - OLAP - data mining
A DBMS separates the logical and physical views of the data - True - False
Which common database challenge is illustrated by the text's discussion of receiving multiple pieces of the same direct mail advertising - data normalization - data accuracy - data redundancy - data inconsistency
DSMSs typically 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
display data in an easier to read format
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
find hidden relationships in data
A DBMS reduces data redundancy and inconsistency by - enforcing referential integrity - uncoupling program and data - utilizing a data dictionary - minimizing isolated files with repeated data
minimizing isolated files with repeated data
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
- creates a subset consisting of all records in the file that meet stated criteria
The type of logical database model that treats data as if they were stored in two-dimensional tables is the - OODBMS - pre-digital DBMS - relational DBMS - hierarchical DBMS
- relational DBMS
The type of database management approach that can handle multimedia is the - hierarchical DBMS - relational DBMS - network DBMS - object-oriented DBMS
- object-oriented DBMS
A data warehouse may be updated by a legacy system - True - False
In a web-based database, middle ware is used to transfer information from the organization's internal database back to the web server for delivery in the form of a web page to the user - True - False
OODBMS are slower than relational DBMS - True - False
An alternative to using application server software for interfacing between a Web server and back end databases is - CGI - HTML - Java - SQL
A data warehouse is composed of - historical data from legacy systems - current data - internal and external data sources - historic and current internal data
- historic and current internal data
Every record in a file should contain at least one key field - True - False
A data dictionary is a language associated with a database management system that end users and programmers use to manipulate data in the database - True - False
Which of the following non-digital data storage items is most similar to a database - library card catalog - cash register receipt - doctor's office invoice - list of sales totals on a spreadsheet
library card catalog.
The special organizational function whose responsibilities include the technical and operational aspects of managing data, including physical database design and maintenance, is called - data administration - database administration - information policy administration - data auditing
Which of the following is NOT a method for performing a data quality audit - surveying entire data files - surveying samples from data files - surveying data definition and query files - surveying end users about their perceptions of data quality
surveying data definition and query files
In a table for customers, the information about a single customer would reside in a single - field - row - column - table
A web interface requires changes to the internal database - True - False
Duplicate data in multiple data files is called data ______________ - redundancy - repetition - independence - partitions
A schematic of the entire database that describes the relationships in a database is called a(n) - data dictionary - intersection relationship diagram - entity-relationship diagram - data definition diagram
Which of the following is a main disadvantage to a distributed database system - lack of flexibility - susceptibility to data inconsistency - poor responsiveness to local users - requires more expensive computers
susceptibility to data inconsistency
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. - unique ID.
A field identified in a record as holding the unique identifier for that record is called the - primary key. - key field. - primary field. - unique ID.
In terms of data relationships, 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.
occurrences linked to a single event.
A grouping of characters into a word, a group of words, or a complete number is called a record. -True - False
A DBMS makes the - physical database available for different logical views. - logical database available for different analytical views. - physical database available for different analytical views. - relational database available for different physical views.
physical database available for different logical views.
Data cleansing is the same process as data scrubbing. - True - False
Microsoft SQL Server is a(n) - DBMS for small handheld computing devices. - Internet DBMS. - desktop relational DBMS. - DBMS for midrange computers.
DBMS for midrange computers.
The specialized language programmers use to add and change data in the database is called - a data access language. - a data manipulation language. - structured Query language. - a data definition language.
a data manipulation language.
OLAP is a key tool of BI. - True - False
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.
In a relational database, a record is referred to in technical terms as a(n) - tuple. - row. - entity. - field.
OLAP enables users to obtain online answers to ad-hoc questions in a fairly rapid amount of time, except when the data are stored in very large databases. - True - False
The data dictionary serves as an important data management tool by - assigning attributes to the data. - creating an inventory of data contained in the database. - presenting data as end users or business specialists would perceive them. - maintaining data in updated form.
creating an inventory of data contained in the database.
In a relational database, complex groupings of data must be streamlined to eliminate awkward many-to-many relationships. - True - False
Detecting and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called - data auditing. - defragmentation. - data scrubbing. - data optimization.
DBMS for midrange computers include all of the following EXCEPT - DB2. - Oracle. - Microsoft SQL Server. - Microsoft Access.
The tool that enables users to view the same data in different ways using multiple dimensions is - predictive analysis. - SQL. - OLAP. - data mining.
A data mart usually can be constructed more rapidly and at lower cost than a data warehouse because - a data mart typically focuses on a single subject area or line of business. - all the information is historical. - a data mart uses a Web interface. - all of the information belongs to a single company.
a data mart typically focuses on a single subject area or line of business.
The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called - normalization. - data scrubbing. - data cleansing. - data defining.
The type of database management approach that can handle multimedia is the - hierarchical DBMS. - relational DBMS. - network DBMS. - object-oriented DBMS.
A data warehouse is typically comprised of several smaller data marts. - True - False