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To Manager Re Position of IT Dept Database Developer From Nick Adkinson Department Technical Support I would first like to thank you for considering me to fill the position of database developer and for the opportunity that it represents I believe however that I am lacking in sufficient skills and knowledge to maintain this system effectively The following is a report outlining the requirements of a relational database setup Background information As you are aware I have recently been on a one-day Access course where I learned how to develop a single table database Maintaining a single table or flat database does not require much knowledge of database theory however our database system is a relational database and consists of many tables linked together or joined To run this sort of database it is necessary to have an understanding of the set of ideas and thinking that is called the database approach Requirements of our database Our database is primarily used for storing data regarding products customers and orders although there are undoubtedly many more categories aside from these One of the aims of using a relational database is to limit redundant information repetition of data which can occur in single table databases where there are for example many orders being placed by the same customer Here is a simple example of a single table database Order dateCustomer nameCustomer IDCustomer telProduct IDOrder quantity 010900Jones11234561020 020900Smith26543211050 030900Jones11234563010 040900Bloggs32244222025 050900Jones11234562050 060900Smith26543213020 070900Bloggs32244226020 080900Bloggs32244221020 Bearing in mind that this table does not include columns for customer addresses product prices and various others it is still evident that there is a great deal of unnecessary input In this example every time the same customer places an order it is necessary to input their name and telephone number again and again Although it is not possible to eliminate all duplicated data for reasons which will be explained here
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