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In relational databases, all the data is stored in tables and all the results are expressed in tables. In this chapter, we examine tables in detail.
What is SQL?
What is a relational database and why would you use one?
Why learn SQL?
What is in this book?
The Parts of a Table
Data is stored in tables
A row represents an object and the information about it
A column represents one type of information
A cell is the smallest part of a table
Each cell should express just one thing
Primary key columns identify each row
Most tables are tall and thin
Examples of Tables
An example of a table in Oracle and Access
Some design decisions in the l_employees ...