Section 4.1 Introduction to Databases

Learning Objectives

After you have completed this section, you should be able to

• define the relational database model.
• write database queries in structured query language (SQL).
• explain how databases can be used on websites.

Activities

• Carefully read the learning objectives.
• Watch related section of the presentation for Chapter 18;
• Read section 18.1 through 18.3 of Chapter 18, Database: SQL, MySQL, LINQ and Java DB.
• Find answers to the study questions below.
• Do exercises 18.5, 18.6, and 18.7 in Chapter 18.

Study Questions

1. What is a database?
2. What are relational databases?
3. What are tables, columns, rows, values, and keys in relational databases?
4. What is the relationship between tables and relational databases?
5. What is SQL?