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Systems administrators or database administrators are responsible for the collation and storage of data. Administrators can either work individually and on a freelance basis coming into a business for the short term or they are employed directly for the business and work on-site, constantly maintaining the systems in place.
Systems administrators are concerned with three crucial areas of databases: their performance; their integrity; and their security. In all they do they must ensure that the systems and their usability are clear, consistent and coherent. This is especially the case for those working in big businesses. As they will usually belong to the IT department and the rest of the staff will have nothing like their understanding of computers, they must ensure all can use the systems in place.
Ultimately the purpose of IT systems is to help businesses and make them more efficient. Whilst this is of course the priority, administrators must ensure that all systems are safe, exclusive and are backed up constantly so they can be restored in case of faults.
The exact role of the systems administrator will differ depending on the company. Maintenance is the key role in big firms whilst those in smaller firms may have to do a lot more, particularly in terms of development.
Due to the increased prevalence of hacking and concerns surrounding online confidentiality, administrators must ensure their systems are protected around the clock.