|Each row is a record. Each record contains multiple fields of data about a particular entity. In this case, the record for Kristen Hill includes the fields LastName, FirstName, Department, SS#, and Date Hired.|675|4165|1905|2895||0|0|3|1|
|Each record in the Staff table is automatically assigned a unique number. This unique number is known as a primary key field.|905|2940|1680|2175||0|0|2|0|
|A relational database can contain many tables. In addition to the Staff table, this database includes a Departments table that contains additional data about each department.|4020|4380|1380|3585||0|0|0|0|
|Joining tables in this way can save tremendous amounts of time and disk space. You don't have to enter the full Department data for each entry in the Staff table. Yet, you can reach that data for use in a report, treating the two tables as a single unit.|345|3480|2655|2400||0|0|0|0|