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4001485
Data & Information
Descripción
AS - Level Information Technology Mapa Mental sobre Data & Information, creado por Calum_Weeks el 10/11/2015.
Sin etiquetas
ict
information technology
information technology
as - level
Mapa Mental por
Calum_Weeks
, actualizado hace más de 1 año
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Creado por
Calum_Weeks
hace casi 9 años
153
3
0
Resumen del Recurso
Data & Information
What is data?
RAW Material
meaning less details as lack relevance
Have no context
Forms of Data
Numbers
Words
Images
Sounds
How can data arise
Direct Source
Counting cars as they enter a car park
Purpose for which it is collected
Indirect data
Collected for one purpose and used for another
EXAMPLE: Sales data from credit card used for promotional
Why Code Data
Less effort to type
More data can appear on screen
Takes up less storage
Easier to check the code is accurate
Examples of Coded Data
dd/mm/yy
M or F
GB, AU, CH, ES
Encoding
Putting data into a specified format that allows effective transmission or storage
Data is converted into binary to allow the computer to understand it
ASCII Encoding - where keyboard characters are changed into Binary. A = 01000001
Why encode Data?
To compress Data
Makes it smaller and occupy less space
Enable a file produced in one software package to be read by someone who does not have that software package on their computer
Types of Encoding
Images
GIF
JPG
BMP
PNG
Sound
WAV
MP3
WMA
Difference between Data & Information
Data is raw values put into, stored and processed by a system
Information is produced as data with a context.
What is information?
Information is processed data
Data that has been
Processed
Contextualised
Organised in the same way
Quality of information
Accuracy
Information to be easily understood
Relevance
Up to date
Why keep data up to date?
Data Protection
Accurate Predictions
Accurate analysis of Data
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