WGU C175 LESSON 2 SIMPLIFIED
REVISION SUMMARY
3 Vs
Three basic characteristics of Big Data databases:
Volume, Velocity and Variety.
abstract data type (ADT)
Data type that describes a set of similar objects with
shared and encapsulated data representation and
methods. An __________ type is generally used to
describe complex objects.
American National Standard Institute (ANSI)
The group that accepted the DBTG recommendations and
augmented database standards in 1975 through its
SPARC committee.
application programming interface (API_
Software through which programmers interact with
middleware. An _____ allows the use of generic SQL
code, thereby allowing client processes to be database
server-independent.
attribute
It is a property of, a characteristic of, or a fact that we
know about an entity.
balancing
Ensuring that the processing load is distrubuted evenly
among multiple servers.
Big Data
, A movement to find a new and better ways to manage
large amounts of web-generated data and derive business
insight from it, while simultaneously providing high
performance and scalability at a reasonable cost.
Chen notation
Entity relationship (ER) model
class
A collection of similar objects with shared structure
(attributes) and behavior (methods). A _____
encapsulates an object's data representation and a
method's implementation. Classes are organized in a
class hierarchy.
class diagram notation
The set of symbols used in the creation of class diagrams
in UML object modeling.
class diagram
A diagram used to represent data and their relationships in
UML object notation.
class hierarchy
The organization of classes in a hierarchical tree in which
each parent class is a superclass and each child class is a
subclass.
client
Any process that requests specific services from the
server processes in a client/server enviroment.
client node
one of three nodes in the Hadoop Distributed File System
(HDFS). The client node acts as the interface between the
user application and the HDFS.
complex object
REVISION SUMMARY
3 Vs
Three basic characteristics of Big Data databases:
Volume, Velocity and Variety.
abstract data type (ADT)
Data type that describes a set of similar objects with
shared and encapsulated data representation and
methods. An __________ type is generally used to
describe complex objects.
American National Standard Institute (ANSI)
The group that accepted the DBTG recommendations and
augmented database standards in 1975 through its
SPARC committee.
application programming interface (API_
Software through which programmers interact with
middleware. An _____ allows the use of generic SQL
code, thereby allowing client processes to be database
server-independent.
attribute
It is a property of, a characteristic of, or a fact that we
know about an entity.
balancing
Ensuring that the processing load is distrubuted evenly
among multiple servers.
Big Data
, A movement to find a new and better ways to manage
large amounts of web-generated data and derive business
insight from it, while simultaneously providing high
performance and scalability at a reasonable cost.
Chen notation
Entity relationship (ER) model
class
A collection of similar objects with shared structure
(attributes) and behavior (methods). A _____
encapsulates an object's data representation and a
method's implementation. Classes are organized in a
class hierarchy.
class diagram notation
The set of symbols used in the creation of class diagrams
in UML object modeling.
class diagram
A diagram used to represent data and their relationships in
UML object notation.
class hierarchy
The organization of classes in a hierarchical tree in which
each parent class is a superclass and each child class is a
subclass.
client
Any process that requests specific services from the
server processes in a client/server enviroment.
client node
one of three nodes in the Hadoop Distributed File System
(HDFS). The client node acts as the interface between the
user application and the HDFS.
complex object
