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The Subject Tutorial Program has also improved its services by developing , in collaboration with the Graduate Software Engineering Program , an electronic web-based tutorial request / registration interface and database which facilitates the matching of tutors with students . Prior to Zope 3 , Zope was designed like a semi-flexible combo meal its components worked together out of the box , but you could change out the Web server or database , for example , if you wanted to . They propose to " combine the advantages of file systems and databases , while avoiding their respective disadvantages . This would allow us to maintain a complete backup of the Calendar in relatively low-tech format , i.e ., no web server or database software required . You will also find control scripts for the web server and databases - if you get any problems with the system ( i.e. web server or database lockups ) , just double-click on these scripts and they will reboot the systems for you - there 's no need to learn any linux command line here . Topics covered include file systems and databases , the relational database model structured query language , entity relationship modeling , normalization of database tables , database design , conceptual design , conceptual design verification , logical design implementation , transaction management concurrence control distributed database management systems , object-oriented databases , client / server systems , data warehouse , databases and the internet , and database administration . The site is now maintained at the Australian National Herbarium as part of a program of the Centre for Plant Biodiversity Research and is maintained on the web server and databases jointly maintained with the Australian National Botanic Gardens . Many computer environments provide access to a few recent versions of the information stored in file systems and databases , though this access can be tedious and may require the assistance of a system administrator . As users launch and exit applications or databases they always return to the menu screen . These data resources are stored in many file systems and databases physically distributed throughout the organisation with , at present , no common way of accessing or searching them to find what data is available . If you plan on running a particular set of software packages on your server , such as a Web server or database , you should gather all of the pertinent details about those packages before you go server shopping .