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database correct answers maintains information about various types of objects (inventory), events (transactions), people (employees), and places (warehouses) database management system (DBMS) correct answers creates, read, updates, and deletes data in a database while controlling access and secu...

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CIS 2010 Unit 3 Test || A+ PASS!!
database correct answers maintains information about various types of objects (inventory),
events (transactions), people (employees), and places (warehouses)

database management system (DBMS) correct answers creates, read, updates, and deletes
data in a database while controlling access and security

query-by-example (QBE) tool correct answers helps users graphically design the answer to a
question against a database

structured query language (SQL) correct answers asks users to write lines of code to answer
questions against a database

two correct answers how many primary tools are available for retrieving information from a
DBMS?

data element (data field) correct answers the smallest or basic unit of information

data models correct answers logical data structures that detail the relationships among data
elements by using graphics or pictures

metadata correct answers provides details about data

data dictionary correct answers compiles all of the metadata about the data elements in the
data model

three correct answers how many primary models does DBMS use for organizing information?

relational database model correct answers stores information in the form of logically related
two-dimensional tables

relational database management system correct answers allows users to create, read, update,
and delete data in a relational database

entity (table) correct answers stores information about a person, place, thing, transaction, or
event

attributes (columns or fields) correct answers the data elements associated with an entity

record correct answers a collection of related data elements (occupies one row in its
respective table)

primary key correct answers a field (or group of fields) that uniquely identifies a given record
in a table

foreign key correct answers a primary key of one table that appears as an attribute in another
table and acts to provide a logical relationship between the two tables

advantages of a relational database correct answers increased flexibility

, increased scalability and performance
increased information integrity
increased information security
reduced information redundance

physical view of information correct answers deals with the physical storage of information
on a storage device

logical view of information correct answers focuses on how individual users logically access
information to meet their own particular business needs

information redundancy correct answers the duplication of data, or the storage of the same
data in multiple places

information integrity correct answers a measure of the quality of inofrmation

integrity contraints correct answers rules that help ensure the quality of information

how many types of integrity contraints are there? correct answers two

relational integrity contraints correct answers rules that enforce basic and fundamental
information based contraints

business rule correct answers defines how a company performs certain aspects of its business
and typically results in either a yes/no or true/false answer

business-critical integrity constraints correct answers enforce business rules vital to an
organization's success and often require more insight and knowledge than relational integrity
contraints

data warehouse correct answers logical collection of information, gathered from many
operational databases, that supports business analysis activities and decision-making tasks

three core concepts of data warehousing correct answers data mart
information cleansing or scrubbing
data mining

data mart correct answers contains a subset of data warehouse information

information cleansing or scrubbing correct answers a process that weeds out and fixes or
discards inconsistent, incorrect, or incomplete information

data mining correct answers process of analyzing data to extract information not offered by
the raw data alone

extraction, transformation, and loading (ETL) correct answers a process that extracts
information from internal and external databases, transforms it using a common set of
enterprise definitions, and loads it into a data warehouse. the data warehouse then sends
portions (subsets) of the information to data marts

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