appropriate+types+for+a+given+set+of+data+for+Boolean,+alpha+numerical+and+numeric.

By Zainab**
 * Appropriate types for a given set of data for Boolean, Alpha numerical and Numeric.

- a field of this data type will only let you enter a '**Yes**' or a '**No**'. This may be as text (YES/NO or TRUE/FALSE) or as a **tick/blank**.
 * Boolean/Logical fields **
 * **When to use** - when you only need to store something as 'true' or 'false' or store whether something exists or does not exist.

**Alphanumeric/text fields** - a field of this data type will accept **both** numbers and text.
 * **When to use** - if you want to enter **text** or a **mixture of text and numbers**.
 * **When NOT to use** - if you want to store **only** numbers or **only** dates. You can enter numbers or dates into text fields but they would get sorted as if they were words and could not easily be used for any calculations.

** Numeric fields ** - a field of this data type is used to store numbers.

Date fields - a field of this type stores days, months and years so that records can be **sorted** correctly and easily **validated** using range checks. Date fields can display the date information in different formats such as the full name of the day/month (28th August 1961) or the numerical versions (28/08/61).
 * When to use** - for any field which will be used to store date information.