| Usually checked for accuracy so often more reliable than dynamic sources |
If held on a CD, the disk could be lost or damaged |
| Can be used without access to the internet. |
Can take a long time to produce i.e. in terms of checking, publishing and distribution |
| If the information is paper-based then it can be used without access to a computer. |
Specialised information can be expensive to purchase |
| Have a historical copy to refer back to even if a later version is produced. Whereas with a dynamic source, the data can be overwritten or vanish |
May have a licence agreement which means that only one person can use it at a time and that copies cannot be made |
| Can be distributed to the people who have a specific interest in the information e.g. customers, teachers |
If a mistake is found in the information then new copies need to be printed and distributed |
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Limited to the information available in the CD/book - not so easy to cross-reference as it would be with a web site. |
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If in a CD/DVD format then will need access to a computer. |
