... decades from Era of Data Processing (1960s), Era of Management of Information Systems (1970s and 1980s), and Era of Strategic Information Systems (1990s), to Era of Web- based Information Systems (since ... quality of information products being supplied The quality of systems personnel and service The knowledge and involvement of systems personnel in the business Content of systems Accuracy of systems ... of Data Processing (1960s), Era of Management of Information Systems (1970s and 1980s), and Era of Strategic Information Systems (1990s) However, since 1993 with the birth of the World Wide Web...