Login

Ch 5: Data Communications

About This Chapter

Watch video lessons and learn about databases, types of data, and database management. Take the quizzes that follow each lesson to test your growing knowledge of data communications.

Data Communications - Chapter Summary and Learning Objectives

In this technological age, understanding the concepts behind data communications is fundamental in working with computer systems. This chapter will cover different types of databases and their functions as well as explain what database management systems are. After completing this chapter you should be able to:

  • Understand elements of databases
  • Identify characteristics of various databases
  • Explain the purpose of database management systems
  • Recognize text, numbers, and multimedia as types of data
  • Be aware of database management and technology for improvement

Video Objective
What is a Relational Database? - Elements, Design & Advantages Learn what a relational database is and how it works.
What is a Distributed Database? - Architecture, Principles & Advantages Understand the characteristics of a distributed database and why people use it.
Other Types of Databases: Parallel, Centralized & Navigational Become familiar with the properties of various databases.
Models of Database Management Systems (DBMS) Explore the different types of database management systems.
What is a Database Management System? - Purpose and Function Learn what a database management system is, what it's used for, and how it works.
Types of Data: Text, Numbers & Multimedia Discover the basic types of data found in databases.
What is Database Management? - How Databases Help Organizations Understand the usefulness of data management and its role in organizations.
Database Concepts and Structures: The Elements That Make Up a Database Study what the fundamental components of a database are and how they are structured.
Database Administration and Security: Definition and Purpose Recognize the importance of securing a database and learn how administrators keep databases safe.
Cloud Computing and Databases: Technology to Improve Database Management Understand the concept of cloud computing and how it's used to improve database management.

9 Lessons in Chapter 5: Data Communications
What is a Relational Database? - Elements, Design & Advantages

1. What is a Relational Database? - Elements, Design & Advantages

The relational database is the most widely used type of database management system. Learn how the relational database organizes data using tables, keys and associations.

What is a Distributed Database? - Architecture, Principles & Advantages

2. What is a Distributed Database? - Architecture, Principles & Advantages

As databases get larger, it often becomes more efficient to keep them in more than one location. Learn about the use of distributed databases by multiple users at different computer network sites.

Models of Database Management Systems (DBMS)

3. Models of Database Management Systems (DBMS)

Get to know the different models of database management systems and learn how each one is used to systematically organize large amounts of data in a logical manner.

What is a Database Management System? - Purpose and Function

4. What is a Database Management System? - Purpose and Function

In this lesson, we will describe the purpose and functions of a database management system, as well as the advantages and disadvantages of using a database management system in an organization.

Types of Data: Text, Numbers & Multimedia

5. Types of Data: Text, Numbers & Multimedia

Discuss the basic types of data found in databases. These include character strings, integers, decimals, images, audio, video and other multimedia types.

What is Database Management? - How Databases Help Organizations

6. What is Database Management? - How Databases Help Organizations

Organizations use large amounts of data. Database management makes it possible to organize and analyze these data. Learn why database management is important to support business operations.

Database Concepts and Structures: The Elements That Make Up a Database

7. Database Concepts and Structures: The Elements That Make Up a Database

Learn the fundamental elements of databases and how they are structured. One common data structure is a database table, which uses records and fields to organize data.

Database Administration and Security: Definition and Purpose

8. Database Administration and Security: Definition and Purpose

A database administrator, or DBA, plays a critical role in managing the databases of an organization. Learn about the various roles of a DBA and the tools used to keep data safe and secure.

Cloud Computing and Databases: Technology to Improve Database Management

9. Cloud Computing and Databases: Technology to Improve Database Management

Cloud computing uses a network of computers to provide services that otherwise would be provided by a single computer or computer server. Learn how cloud computing works and how it allows you to use the same database on multiple devices in this video lesson.

Earning College Credit

Did you know… We have over 79 college courses that prepare you to earn credit by exam that is accepted by over 2,000 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Support