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PAGE 13: ELECTRONIC DATA PROCESSING
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111 cards
Cards (120)
Data processing
is a series of steps to extract information from raw data
Stages of Data Processing Cycle
Each order must be taken in order: order is acrylic
Collection
of data
Preparation
of data
Input
of data
Processing
of data
Output
of information
1.
Collection
First stage of cycle
Crucial since the quality of data collected will impact on the output
Data gathered must be defined and accurate
Types:
Census
,
sample survey
,
administrative by-product
Preparation
Manipulation of data for further analysis and processing
Raw data cannot be processed and must be checked for accuracy
It is about Construction of dataset from one or more sources
Input
Task where verified data coded or converted into machine-readable form
Data entry methods:
Keyboard
,
digitizer
,
scanner
Requires speed and accuracy
Formal and strict syntax for processing complex data
Processing
· When the data subjected to manipulation methods
· Execution of computer program
· Made up of multiple threads of execution
· Software programs available for processing large volumes of data
Output
and
Interpretation
· Where processed information transmitted to user
· Presented in various report formats
· Output interpreted for meaningful information
Storage
· Last stage in cycle
· Data, instruction, and information held for future use
· Allows quick access and retrieval of processed information
Data processing
is defined as: "a sequence of operations on data to convert it into useful information".
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