Documentation of
Conceptual Design
Documentation
 Documentation

is any communicable
material that is used to describe, explain
or instruct regarding some a...
Documentation, cont.


1.
2.
3.
4.

The documentation of the conceptual
design involves :
Overall system flow.
System Inp...
Report Preparation










Having documented the conceptual design, the next step is to
get an approval of the m...
Detailed SAD Procedure


Need for Information :
Identify the users and application of the
information for the information...
Detailed SAD Procedure, cont.


Feasibility :
Technical : Hardware and software availability and
capability for implement...
Detailed SAD Procedure, cont.


Detailing the requirements :
Study the sources of generating the information.
Establishin...
Detailed SAD Procedure, cont.


Detailing the System Design :
Draw the document flow charts and dataflow diagrams it
help...
Detailed SAD Procedure, cont.


Conceptual model of computer system :
Define step by step the usage of files, processes a...
Detailed SAD Procedure, cont.




Develop the test data for checking the system
ability :
Confirms whether the system de...
Detailed SAD Procedure, cont.


Implementation :
Train the personnel. Run the system in parallel.
Prepare a system manual...
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Documentation

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Documentation

  1. 1. Documentation of Conceptual Design
  2. 2. Documentation  Documentation is any communicable material that is used to describe, explain or instruct regarding some attributes of an object, system or procedure, such as its parts, assembly, installation, maintenance and use.
  3. 3. Documentation, cont.  1. 2. 3. 4. The documentation of the conceptual design involves : Overall system flow. System Inputs. System Outputs. Other documentation like activity sheet and system description,etc.
  4. 4. Report Preparation         Having documented the conceptual design, the next step is to get an approval of the management(users)so as to start the detailed design activity. A proposal giving the cost to be incurred and possible organizational changes is prepared for the management. The report prepared should mention the : Problem Objectives Overall view of system Time Resources required for developing and implementing the system. The report submitted is reviewed by the top management of the organisation.If approved, the detailed system design activityis undertaken.
  5. 5. Detailed SAD Procedure  Need for Information : Identify the users and application of the information for the information for achieving the objectives.  Define the System : To decide the nature, type of the system and its scope and also helps to determine the system ownership, its benefits and complexity.
  6. 6. Detailed SAD Procedure, cont.  Feasibility : Technical : Hardware and software availability and capability for implementation. Economic : Study the investment and benefits.Assess the improvement in value of the information.Determine the return on investment. Operational : Examine whether the system will perform as desired in terms of time and results.Are the users ready to use the system?
  7. 7. Detailed SAD Procedure, cont.  Detailing the requirements : Study the sources of generating the information. Establishing I/O linkages. Modify the existing system to satisfy the needs.  Conceptual System Design : Determine the inputs, process and outputs, and design a conceptual model.
  8. 8. Detailed SAD Procedure, cont.  Detailing the System Design : Draw the document flow charts and dataflow diagrams it helps in bringing a clarity in the dataflow. The responsibility centres and the process centres are identified.  Structuring the system Design : Breaks the system into its hierarchical structure which helps in understanding the dataflow from one level to the other and the processes carried out at each level.
  9. 9. Detailed SAD Procedure, cont.  Conceptual model of computer system : Define step by step the usage of files, processes and interface,it helps to put down the data processing flow in the computerised system.  Break the system in programme modules : Modules will be data entry, data validation, data processing, reporting and storing.
  10. 10. Detailed SAD Procedure, cont.   Develop the test data for checking the system ability : Confirms whether the system design is satisfactory. Suggests the modifications. Install the System : Install, test and run the system before the user is exposed in a live mode.
  11. 11. Detailed SAD Procedure, cont.  Implementation : Train the personnel. Run the system in parallel. Prepare a system manual which helps to identify the problems and provide solutions.  Review and Maintenance : Review the system through audit trial and test data, also confirm whether the objective is fulfilled. It helps to maintain the system quality and quality of information through modification.

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