________________________________________________________________________ a Kharkov National University of Radio Electronics, Kharkov, Ukraine. *Corresponding author: E-mail: moh_alkilani@yahoo.com; Chapter 7 Print ISBN: 978-93-5547-971-6, eBook ISBN: 978-93-5547-972-3 Methodology of Data Collection in Information System (IS) Mohamed Al Kilani a* and Volodymyr Kobziev a DOI: 10.9734/bpi/costr/v9/3712C ABSTRACT This chapter aims to give and clarify the components of research methodology in information system (IS), and compare between qualitative approach and quantitative approach, as well as justification for use of the case study in information system (IS). Research methodology in a research study is considered as an important element, and therefore determining the method of research methodology is very important step. The qualitative approach method provides explanations to explore a particular phenomenon, theory building and capturing everyday life through data collection and analysis. Research methodology is useful to establishing the structure of research, such as strategy, approach, research philosophy, and components of the methodology. The main features that distinguish the experimental study from other methods are the possibility of controlling the experimental variable or the cause to achieve the hypothesis. The goal of research design is to provide a clear picture of the structure of the research as well as the methods used, such as data collection, research questions, and data sources. The research design allows the researcher to outline all necessary methods and tools for the research, such as project theory and research methodology. Keywords: Qualitative; quantitative; case study; data collection; validity and reliability. 1. INTRODUCTION Research methodology in the field of information systems (IS) can be classified into several subjects, including technology, management, political science, and strategy. Research methodology is an important tool in research studies for identifying problems that need to be investigated and achieving the goals of a research study.c [1]. It can be described as use a particular method to collecting data and analysis, and these methods have to compatible with problems of research to get accurate and realistic results [2]. Methodological choice, according to Holden and Lynch [1], should be related to the philosophical position