information handling (data bases)

information handling (data bases)

1. a data base is a colletion of data in tables

   • database uses
     • school registration
     • police records
     • keeping records of loans
     • medical records
     • search engines

2. benefits

   • fast end easy to asscess
   • easy to edit
   • reports
     • business can print reports or email it to colleagues or boss
   • easy to share data
   • secure
     • can add passwords

3. validation

   • the computer cheaks if the data if sensible

4. data base terminology

   • queries
     • queries are used look for data
       • you could scan a data base for people with grey hair.
   • fields
     • fields are what data is put under to give it a meaning to the computer and user
       • with queries you could scan for data under a field
   • forms
     • it allows the user to make a form which will make entering data easyer
   • validation
     • validation is a computer cheak to see if the data if sensible
       • it askes you to input if your male of female and you input larma the computer will not accept it.

5. verification types

   • double cheaking the data by asking the user twice
   • cheaking the data with it's original copy.

6. data types

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