databases

databases

1. Database use

   • A collection of data which is held together in an organised or logical way
   • Examples
     • Serach engines
     • school register
     • police records

2. Benefits

   • can hold a vast amout of data
   • very fast to find a specific record
   • easily search for a specific criteria
   • can be used to analyse the data
   • Data can be sorted into ascending or descending order
   • Can easily update or amend a record
   • Records are stored safely
   • can be kept secure by passwords

3. Data base terminology

4. Validation

   • Validation aims to make sure that Data is sensible,reasonable,complete and within acceptable boundries
   • It is aimed to try and reduce the numbers of errors

5. Veryfication

   • Veryfication is to check that the data on the original source is identicle to the data that you have entered into the system or document
   • And it is helped to make sure that there is a few mistakes as possible

6. Database queries and reports

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