The terms data and information are associated while building the information system.
Data are raw facts and figures that are set of isolated, unrelated and un-interpreted.Data can be collected from various sources obtained through interview, questionnaire,onsite-site observation, counting, measuring, sampling. Data is processed or transferred into information, which is used in the decision-making process. Example: In a bank account number, account name, amount, and date in a cheque is provided by the user are raw data.
Information is the processed data. It is a set of organized, validated, corrected and collected data. It is the processed data into a form that is meaningful to the user so, that decision maker may take necessary actions. Example: Total deposited or withdrawn the amount in a branch of a bank in a day is the information.
Definitions of Information system:
The information system is interrelated components working together to collect data, process it, gives output and store using the resources of hardware, software, people, procedure and controlling mechanism. It helps to support decision making, coordination, control, analysis and visualization in an organization. The aim of an information system is to provide detailed information on a timely basis throughout the organization so, that the top management can take proper action and effective decision.
The system that accepts data as input process it to generate the information and provides the information to the user as output is the information system.
So, that data are the major raw materials for making an information system. The information system that uses the computer is called computer Based information system(CBIS)