Fichas
Computing ISDD
Fichas del conjunto (11)
- 1Information RichAccess to lots of information from a variety of sources
- 2Information PoorLack of access to information from a variety of sources
- 3What is a database?A collection of organised data
- 4What jobs are easier to do on a computerized database?Easy to edit data
Won't take up lots of room
Much quicker to search and sort - 5File Record Field Explain them?File - the whole set of data in a database
Record - A set of information on one subject (one pupil in a school)
Field - One piece of information in a record (pupils name) - 6State the 8 field typesText
Number
Graphic
Date
Time
Boolean
Calculated
Link - 7Flat File DatabaseA database that holds all of the information in one table
- 8Flat File Database - ProblemsData can be duplicated
Human error - When typing the same data in a number of times - 9Relational DatabaseTwo or more tables that store information about different things which are linked
- 10Range CheckEnsures that the data entered is within a lower and upper limit
e.g. cost >£0 AND <£100 - 11Restricted Choice
Información
- Descripción
- Fichas sobre Computing ISDD, creado por claireacumming el 31/10/2015.
- Creado por
- claireacumming
- Visitas
- 1
- Valoración