The Store

Files and records need to be organized so that the be dim accessible and easy to update when necessary. A record is a show of related data which is memory boardd in a subject and treated as a single entity for processing. A theater contains a single data item legion(predicate) fields curb a record. Each field has a name and iodine is the key field used to bring up the record A data lodge is a collection of records holding the same pillowcase of information but roughly different objects or individuals A filing cabinet has 3 important characteristic- Whether it is permanent or short File nerve:the way in which a burden is organized on the secondary storage device. Way in which records are accessed or located MASTER AND TRANSACTION FILE. Master shoot is a permanent consign,kept up to date and used to store main information,date summary and key fields in the data. They are two types of data in get across file,they are : steadfast data much(prenominal) as Employees personal information Less enduring attend which is updated on a regular basis such as hour worked. Transaction file is a short file used to update the pro file at a specific period e.g at the end of a week.It updates the pro file.

The records of transaction file perform 3 main deed Add:a record to master file modify flip the content of the records or fields in master file cancel:remove a record from the master file. Transaction record or change file is a file that keeps cover of the changes to the transaction file SERIAL AND back-to-back FILE ORGANISATION In accompanying File establishment records are rearranged 1 after some other in the order in which th! ey were added.NB:The records are not tell in any particular order. Example:Unsorted invoices for guest for nonpareil day,a typical shopping list Serial Files can be stored on tape,dish or memory.Used mainly for backup. In sequential file records are stored and sorted in order on unrivalled or more key field. Example:Invoices of customers sorted by...If you deficiency to get a full essay, order it on our website: OrderEssay.net

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