A computer-based information system, or CBIS, uses computers to collect, process, store, analyze and distribute information for a specific purpose, such as meeting a business objective. The main components of a CBIS include hardware, software, data, procedures and people.Know More
In a CBIS, the hardware is the physical machinery, such as a computer, printer, display screen and cables. The hardware devices work together to accept data, or raw facts, as input before processing the data into useful information and then displaying the information as output. Software refers to computer programs that provide instructions for processing the data. The procedures are what people perform when working with a CBIS to process data and produce information.
Traditionally, a business uses four types of computer-based information systems. The one used by the most people in the business is a transaction processing system, which processes events or activities that affect the entire organization, such as customer orders. A management information system provides information to managers so that they can plan and run the business. Managers also use decision support systems when making major decisions that affect the entire business. Senior executives use a special type of decision support system known as an executive information system, which provides an overview of the entire business.Learn more about Software
Like viruses in humans or animals, computer viruses work by spreading themselves, by attaching themselves to an innocuous program or computer process and replicating with the spread of information between computers. Average computer users see viruses spread through websites or email.Full Answer >
An Oracle database works by storing and retrieving information that is placed in logical and physical structures, allowing for quicker and simpler recall by programs and computers. A database works by storing data in logical structures called tables. These tables are then organized into larger groupings called schemas.Full Answer >
Microsoft Access is a database management system used for capturing and analyzing data from computers or networks. Access can also be used to build new applications that use the data once it has been categorized.Full Answer >
When a browser connects to a website, it contacts a DNS server that converts the domain name to a numerical IP address; DNS redirection or hijacking programs subvert this process and return faulty information. DNS redirection often leads to phishing or other kinds of attacks.Full Answer >