... one data file at a time. Each record contains the same field headings. Because each record contains all the information about a person or object, this process can be very slow. The files can also take up a lot of computer memory. Relational Database: Relational databases are more difficult to set up, but much quicker to use. The different files in a relational database can be handled at the same time. Related items of data can be stored in separate files so that the data is accessed only when needed. This cuts down the number of separate data items stored in the computer memory. Description of task to be attempted: I have been speaking to the manager of 'Green Park Hotel' and he mentioned to me that he is having problems with the hotels records. He is having trouble keeping track of the income and the outgoings of the hotel, because ...

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