A Short History of Databases
The first electronic storage of data was done in file systems. Previously we saw some of the problems that
eventually developed. Due to growth in the amount of data stored and the increase in number of people
needing access to
After this chapter you should be able to:
Explain the relational model.
List and discuss key concepts of the relational model including relations and constraints.
List and discuss the different types of keys (primary, foreign, composite,
Principles of Microeconomics
Chapters 13, 14, 16
You can write on this test BUT please also answer on your ScanTron sheet. Make sure your name is on your ScanTron sheet.
There are forty (40) questions on this test. Read each question and
Network Computer Maintenance and Repair (A+) Syllabus
CET1178C Class 5637, Summer 2017
Network Computer Maintenance and Repair (A+) - CET1178C Class 5637
Date: May 8 to August 3, 2017
This course is an introduction to network maintenanc
View this video (15:30 min, .mp4) for an introduction/overview of the course. At approximately 15
minutes, this is one of the longer videos in the course (I promise). You can also download a PDF version
of the Powerpoint presentation used in t
History of Data
This course is titled Database Management but it is really about data. There would be no need for
databases if you didn't have data and usually lots of it! It doesn't require a computer or a database to
capture, maintain, and use data. Dat
Getting Started - Read Me First!
Hello and welcome to your Seminole State web-based class hosted in the Canvas class management
system. You will see a vertical menu on the left side of your page with links to important parts of this
course. The purpose of
Frequently Asked Questions
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Linking (or joining) tables is one of the most powerful features of a relational database. This is the feature
that enables data integration with minimal data redundancy. Two or more tables will be listed in the
FROM clause when you select
Chapter 1 Review Question Answers
Why is the study of database technology important?
Databases are used everywhere: They are key components of e-commerce and other Webbased applications. They lay at the heart of organization-wide operational and decis
entity always has a unique primary key.
key is an attribute or a group of
attributes whose values are unique
throughout all of the rows of the relation.
also implies the values w
College File System
The unique identifier for the combined table is the ProfessorNum plus
Deviation from the common rule; an irregularity;
Problems Storing and Accessing Data
Problems Storing and Accessing Data
Difficult to store and to provide efficient &
accurate access to a companys data
The volume of data that companies have is
More people need access to the
Using Data for Competitive
Data as Corporate Resource
Data may be the most difficult corporate
resource to manage.
We have tremendous volume - billions,
trillions, and more individual pieces of data
Amount is growing every da
Step 1: Review Ch. 1 PowerPoint and watch the Packet Tracer (PT) Basics Video at
Rick Graziani describes the basics of using Packet Tracer including creating a simple topology, adding
IPv4 addresses on clien
Project Name: Chpt5_Project
Class Name: Chpt5_Project
Write a Java program that does the following:
Generates 5 random numbers between 1 and 20 (each random number needs to be shown
in the output).
Sum the 5 random numbers and display the sum.
e wallspace , Java , Chpi4_Tuloliall'ChpM_Tmmial.java , Eclipse
File Edit Saulce Reladol Navigate Batch ijed Run Window Help
[email protected] men $4.14qu Quicknccesqjgg
t: Packs. 3; m ChptZ_First_. m ChptZ_iject. m ChpB_Tuturi. l] ChpB_Pruject
Chapter 2 Project
Project Name: Chpt2_Project
Class Name: Chpt2_Project
Write a Java program that computes the pay for an employee who works by the hour. You can assume
the employee never works overtime, so their hourly rate will not change.
Step 1. Input