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These basic technologies allow extracting information from paper documents for further processing it in the enterprise information systems such as [[Enterprise resource planning|ERP]], [[Customer relationship management|CRM]] and others.{{Citation needed|date=April 2013}}
The documents for data capture can be divided into 3 groups: '''[[structured data|structured]]''', '''semi-structured''' '''and [[Unstructured data|unstructured]]'''.{{Citation needed|date=April 2013}}
'''Structured documents''' (questionnaires, tests, insurance forms, tax returns, ballots, etc.) have completely the same structure and appearance. It is the easiest type for data capture, because every data field is located at the same place for all documents.{{Citation needed|date=April 2013}}
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