THE FREE ENCYCLOPEDIA)
Silver et al.  defined Information Systems as follows:
Information systems are implemented within an organization for the purpose of improving the effectiveness and efficiency of that organization. Capabilities of the information system and characteristics of the organization, its work systems, its people, and its development and implementation methodologies together determine the extent to which that purpose is achieved
OF INFORMATION SYSTEMS (IS) (FROM WIKIPEDIA,
THE FREE ENCYCLOPEDIA)
Information Systems (IS) is a professional and academic discipline concerned with the strategic, managerial and operational activities involved in the gathering, processing, storing, distributing and use of information, and its associated technologies, in society and organizations.
The term information systems is also used to describe an organizational function that applies IS knowledge in industry, government agencies and not-for-profit organizations. 
An information system is not only the technology an organization uses, but also the way in which the organizations interact with the technology and the way in which the technology works with the organization's business processes. Information systems are distinct from information technology (IT) in that an information system has an information technology component that interacts with the processes components.
As an area of study, IS bridges the multidisciplinary business field and the interdisciplinary computer science field that is evolving toward a new scientific discipline.
All IS degrees combine business and computing topics, but the emphasis between technical and organizational issues varies among programs. For example, programs differ substantially in the amount of programming required.
|INFORMATION SYSTEMS RESEARCH
Information systems research is generally interdisciplinary and concerned with the study of the effects of Information Systems on the behavior of individuals, groups, and organizations..
Hevner et al. (2004)  categorized research in IS into two scientific paradigms including behavioral science which is to develop and verify theories that explain or predict human or organizational behavior and design science which extends the boundaries of human and organizational capabilities by creating new and innovative artifacts.
TOP IS JOURNALS
Management Information Systems Quarterly
Information Systems Research
Journal of Management Information Systems
See rankings of IS journals at the website of the Associations of Information Systems
IMPORTANT IS CONFERENCES
International Conference on Information Systems (ICIS)
Hawaii International Conference on System Sciences (HICSS)
European Conference on Information System (ECIS)
Americas Conference on Information System (AMCIS)
Pacific Asia Conference on Information Systems (PACIS)
Australian Conference on Information System (ACIS)
|INFORMATION SYSTEMS CAREER PATHS
WIKIPEDIA, THE FREE ENCYCLOPEDIA)
Information Systems have a number of different areas of work:
Information systems strategy
Information systems management
Information systems development
Information systems security
Information systems iteration
There are a wide variety of career paths in the information systems discipline. "Workers with specialized technical knowledge and strong communications skills will have the best prospects. Workers with management skills and an understanding of business practices and principles will have excellent opportunities, as companies are increasingly looking to technology to drive their revenue."