An attribute type determines the nature of the information held by the attribute. An attribute type can be either a basic type or a reference type. There are following basic types:

• Plain Text, used for non-formatted textual information such as a person's name or address.
• Number, used for monetary, countable or other numerical data.
• Yes/No, used for information that can be described by one of two possible values, such as yes/no, on/off, etc.
• Date, used to hold dates.
• Timestamp, used to hold a moment in time including the date and the time parts.
• Duration, used to hold a time interval.
• Picture, used specifically for images intended to be displayed on the object form.
• Document, used to hold document data such as text, report, scanned picture, web page, digitised sound, etc.
• Shortcut, used to display data of a related business object.