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Planning a New System
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access control accuracy adequate application audit auditor authorised authority back-up batch centre changes checks clerical procedures computer files computer room Computer Security computer systems concerned confidential contingency plans Council of Europe data held data items data processing data subject data user database Degaussing disk employee end-user enquiries ensure errors exist facilities files GUIDELINES handle individual inform the subject input installations involved item of data key punch logs machine machine-readable magnetic media ment monitor movement of data NCC Publications necessary normal off-site store on-line on-line systems operations organisation Output control package permitted personal data personnel physical security principles of data print-out problems proper properly public switched network purging purpose relevant routine security copies segregation of duties sensitive data sensitive material specified staff storage subject access requests supply system designer tape techniques terminals tion transactions unauthorised update usually validation