AS Level ICT

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AS Level ICT

• Design of processes

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Processes

• Processing turns raw data that has been inputted
  into information that can be outputted
• There are many different ways in which data can
  be processed including
• Calculations (i.e. arithmetic operations that
  manipulate data to produce mathematical results)
• Logical operations (i.e. where decisions are made
  based upon the data that has been inputted)

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Processes

• Searching (i.e. looking at data and searching by
  a name, date or keyword to find desired
  information)
• Sorting (i.e. segregating items of data into
  groups according to specified criteria)
• Selecting (i.e. choosing the attributes that will
  be returned as the result of a query)
• Re-arranging (i.e. putting data into a new order
  or arrangement)

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Processes

• Structuring (i.e. imposing an order or
  organization on a set of data)
• Classifying (i.e. grouping items of data based on
  their common relationships)
• Merging (i.e. combining or mixing data from
  different sources)
• Recording (i.e. the process of capturing data or
  translating information to a format that can be
  stored)

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Processes

• Retrieving (i.e. recalling data that has been
  stored)
• Transmitting (i.e. sending data from one place to
  another)
• Controlling (i.e. process variables are fed into
  a computer and the output of the computer is used
  to control the process )
• Producing graphs and/or charts
• Manipulating images

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Selecting and documenting processes

• During the design stage of any project it is
  important that the designer chooses appropriate
  processes
• It is of equal importance that the designer
  documents their choices, and that this
  documentation includes details of the process
  chosen and the rationale behind those choices

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Selecting and documenting processes Example

• A designer has chosen to solve a problem using a
  spreadsheet
• The processes that will be applied to inputted
  data must be identified and documented

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Selecting and documenting processes Example

• The designer will need to
• Select and list the type of arithmetic processes
  they wish to include
• Select and list the logical operations they wish
  to use
• Select and list details of any macros they wish
  to use
• Select any validation test they wish to use

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Selecting and documenting processes Example

• Once the decisions as to what processes will be
  needed to solve the problem using a spreadsheet
  have been made, the outline of these processes
  will need to be expanded and greater detail
  included

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Selecting and documenting processes Example

• The designer will need to produce and document a
  list of the following
• Every calculation used
• Every logical expression used
• Every sort used
• Every macro used
• Every validation test used
• Every chart or graph that will be produced

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Selecting and documenting processes Example

• The rationale each choice has been made also
  needs to be documented, as this will
• Enable the designer ensure that the end solution
  remains within the original parameters they were
  set
• Enable the client to understand how the designer
  is approaching the solution to their problem

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Selecting and documenting processes Example

• Once this has been completed, the designer should
  then be able to proceed to the next stage of the
  design process

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AS Level ICT

• Design of processes