WGU C175 - Chapter 2: Data Modeling
Latest 2022 Graded A+
3 Vs (3 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 abstract data type is generally used to describe
complex objects
American National Standards Institute (ANSI) ✔✔The group that accepted the DBTG
recommendation and augmented database standards in 1975 through its SPARC committee
Application Programming Interface (API) ✔✔Software through which programmers interact with
middleware. An API allows the use of generic SQL code, thereby allowing client processes to be
database server-independent
Attribute ✔✔A characteristic of an entity or object. An attribute has a name and a data type
Balancing ✔✔Ensuring that the processing load is distributed evenly among multiple servers
Big Data ✔✔A movement to find 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
Class ✔✔A collection of similar objects with shared structure (attributes) and behavior (methods).
A class 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 Diagrams ✔✔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 server services processes in a
client/server environment
Client Node ✔✔One of three types of nodes used in the Hadoop Distributed File System (HDFS).
The client node acts as the interface between user application and the HDFS.
Complex Object ✔✔An object formed by several different objects in complex relationships
Conceptual Model ✔✔The output of conceptual design process. Provides a global view of an entire
database and describes the main data objects, avoiding details
Conceptual Schema ✔✔A representation of the conceptual model, usually expressed graphically
Connectivity ✔✔The type of relationship between entities. one-to-one, one-to-many, many-to-
many
Constraint ✔✔A restriction placed on data, usually expressed in the form of rules. Constraints are
important because they help to ensure data integrity
Latest 2022 Graded A+
3 Vs (3 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 abstract data type is generally used to describe
complex objects
American National Standards Institute (ANSI) ✔✔The group that accepted the DBTG
recommendation and augmented database standards in 1975 through its SPARC committee
Application Programming Interface (API) ✔✔Software through which programmers interact with
middleware. An API allows the use of generic SQL code, thereby allowing client processes to be
database server-independent
Attribute ✔✔A characteristic of an entity or object. An attribute has a name and a data type
Balancing ✔✔Ensuring that the processing load is distributed evenly among multiple servers
Big Data ✔✔A movement to find 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
Class ✔✔A collection of similar objects with shared structure (attributes) and behavior (methods).
A class 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 Diagrams ✔✔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 server services processes in a
client/server environment
Client Node ✔✔One of three types of nodes used in the Hadoop Distributed File System (HDFS).
The client node acts as the interface between user application and the HDFS.
Complex Object ✔✔An object formed by several different objects in complex relationships
Conceptual Model ✔✔The output of conceptual design process. Provides a global view of an entire
database and describes the main data objects, avoiding details
Conceptual Schema ✔✔A representation of the conceptual model, usually expressed graphically
Connectivity ✔✔The type of relationship between entities. one-to-one, one-to-many, many-to-
many
Constraint ✔✔A restriction placed on data, usually expressed in the form of rules. Constraints are
important because they help to ensure data integrity
