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Unit 13: Control Techniques




          System design shows how the system will fulfill the requirements and objectives laid out in  Notes
          the system analysis phase. The designer will address all the managerial, organizational and
          technological components the system will address and need. It is important to note that user
          information requirements drive the building effort. The user of the system must be involved
          in the design process to ensure the system meets the users need and operations.
          Programming entails taking the design stage and translating that into software code. This is
          usually out sourced to another company to write the required software or company’s buy
          existing software that meets the systems needs. The key is to make sure the software is user
          friendly and compatible with current systems.
          Testing can take on many different forms but is essential to the successful implementation of
          the new system. You can conduct unit testing, which tests each program in the system separately
          or system testing which tests the system as a whole. Either way there should also be acceptance
          testing, which provides a certification that the system is ready to use. Also, regardless of the
          test a comprehensive test plan should be developed that identifies what is to be tested and
          what the expected outcome should be.
          Conversion is the process of changing or converting the old system into the new. This can be
          done in four ways:
          Parallel strategy—Both old and new systems are run together until the new one functions
          correctly (this is the safest approach since you do not lose the old system until the new one
          is “bug” free).
          Direct cutover—The new system replaces the old at an appointed time.

          Pilot study—Introducing the new system to a small portion of the operation to see how it
          fares. If good then the new system expands to the rest of the company.
          Phased approach—New system is introduced in stages.

          Anyway you implement the conversion you must document the good and bad during the
          process to identify benchmarks and fix problems. Conversion also includes the training of all
          personnel that are required to use the system to perform their job.

          Self Assessment

          State whether true or false:

          5.   Library management information system can also be called a library management system.
          6.   Library management system involved three basic elements : hardware, software and the
               users.

          7.   ERP stands for Enterprise Resource Processing.
          8.   SCM stands for Supply Chain Management.
          9.   DSS stands for Decimal Support System.

          13.3   Summary

          •    The Library of Congress Control Number or LCCN is a serially based system of numbering
               cataloging records in the Library of Congress in the United States.
          •    A library management information system can also be called a library management
               system (LMS) or integrated library system (ILS). It is a system that makes use of information
               technology (IT) to carry out managerial objectives.


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