Unit 3

You can find class material for Unit 3

Topic 12: Manipulating data

Our world runs on data but that data must be relevant, accurate, and valid. It must be stored and manipulated in ways that allow it to be of value to individuals and organisations. Collecting, storing and manipulating data is the focus of many IT systems.

click here to download the pdf file.

Topic 13: Enabling technologies

It is not always possible to have access to or set up tangible hardware and software environments. Virtualisation allows us to work with software-based systems. Distributed systems allow us to share data and computing resources across geographical boundaries to solve problems more quickly. Storing and securing data, especially across distributed systems, is of paramount importance. Encryption is one way to ensure that data is secure. Ultimately, humans need to interact with new technologies and the interface for a new device or technology may determine whether it succeeds or fails.

click here to download the pdf file

Topic 14: Using IT systems in organisations

The use of IT systems is pervasive in different organisational sectors: retail, education, manufacturing, finance, transportation, safety, commerce and public service. Organisations rely on IT systems for managing production, customers and finances. Ongoing activities revolving around risk management, system changeovers, maintenance and disaster recovery are carried out by IT professionals.

click here to download the pdf file

Topic 15: Systems development

The success or failure of IT projects depends on project-management skills. The appropriate use of targets, planning, and analysis are common to all approaches. The classic waterfall method is an easily understood method, which is still relevant. However, agile approaches to project management are more commonly found in practice.

click here to download the pdf file

Topic 16: Emerging Technologies

Machine learning, in association with Big Data, has the potential to change the way we live and work. Virtual and augmented realities already play a part in entertainment and safety assurance. The Internet of Things, as more and more devices come online, will affect our daily lives. Being able to critically assess these emerging technologies will enable us to become more astute users of the IT systems around us.

click here to download the pdf file