Information System Design and Development

The general aim of this Unit is for the learner to develop basic knowledge, understanding and practical problem-solving skills related to the design and development of information systems through a range of practical and investigative tasks. Learners will implement practical solutions using a range of development tools.

They will also develop an understanding of computer hardware, software, connectivity and security issues, and relate these to one or more information systems.

Learners who complete this Unit will be able to:

Outcome 1

Develop a simple information system, using appropriate development tools, by:

  • 1.1 Creating a structure and links
  • 1.2 Integrating different media types

Outcome 2

Consider a number of basic factors involved in the design and implementation of an information system by:

  • 2.1 Describing its basic features and functionality
  • 2.2 Describing its hardware, software, storage and connectivity requirements
  • 2.3 Describing relevant security risks

Unit Content

Structures and links (database)
  • database structure:
    • field
    • record
    • file
  • field types
    • text
    • number
    • date/time
    • graphic
    • calculated
  • database operations
    • search
    • sort
Structures and links (web-based)
  • website
  • page
  • URL
  • hyperlink
Media types
  • Sound
  • graphics
  • video
  • text
Purpose,  functionality, users
  • Simple descriptions of main features and functionality
Technical

Implementation (hardware  requirements)
  • input and output devices
  • processor clock speed (Hz)
  • memory
    • RAM
    • ROM
Technical

Implementation (software requirements)

  • operating system platform required
Technical implementation

(storage)

  • Storage devices
    • built-in, external, portable
    • magnetic, optical
    • capacity, speed
    • rewritable, read-only
Technical implementation (networking/ connectivity)
  • stand-alone or networked
  • LAN/internet
  •  wired/wireless
Security risks
  • viruses
  • worms
  • Trojans
  • hacking