2. System analysis and design is a process of
examining an existing or proposed business
system to identify its components, processes,
and data flows, and then designing a new or
improved system to meet specific organizational
goals and requirements
3. It involves a thorough study of the system's
current state, its limitations, and the desired
future state to design and implement an
efficient and effective system that meets the
4. Types of information systems
Transaction processing systems (TPS):
TPSs are used to track and record day-to-
day business transactions, such as sales,
purchases, and customer orders.
7. Decision support systems (DSS)
DSSs are interactive computer-based systems
that help managers make decisions. DSSs use
data from TPSs and MISs, as well as other
sources, to provide managers with information
that can be used to make better decisions.
8. Expert systems (ES)
ESs are computer programs that use artificial
intelligence to simulate the reasoning and
decision-making abilities of human experts. ESs
can be used to solve complex problems that
would be difficult or time-consuming for
humans to solve.
9. Office automation systems (OAS)
OASs are used to automate tasks such as word
processing, spreadsheet analysis, and email.
OASs can help to improve efficiency and
productivity in the workplace.
11. Enterprise resource planning (ERP)
ERP systems are integrated software suites that
are used to automate and manage all of the core
business processes of an organization, such as
accounting, manufacturing, sales, and human