Database - How To Movies
1. Setting up and creating tables and fields 2. Formatting Fields. 3. Creating Primary Key and Relationships 4. Searching and Creating Reports 5. Editing Reports
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Computed Fields

Calculating values

One of the main advantages that computers have over humans is the ability to perform calculations very quickly, as many times as necessary, without errors.

In a database, calculations are performed using expressions or formulas. Here is an expression to calculate a student’s total mark from three tests:

= [Test 1] + [Test 2] + [Test 3]

Many databases also allow you to use functions in expressions. For example, the following expression would calculate the student’s average mark from the three tests:

= Average([Test 1], [Test 2], [Test 3])




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