This thesis describes a methodology presented in a pattern language for design of questionnaire / survey information systems. It is intended to be used by professional programmers with negligible experience in the domain of questionnaire / survey software. A system of individual and discrete design patterns of various types is interconnected by varying relations enabling the user to navigate effortlessly and to implement a customizable level of expertise contained within the language. The design patterns contain expert knowledge about construction and contents of a universal high-end questionnaire / survey information system. Data structures, graphical user interface and psychological ramifications of questions’ formulations are discussed in detail. The descriptions of two different prototypes of information systems are supplied. They were created using the expertise of the pattern language and serve as a proof of eligibility for it. The innovation in the thesis is driven by the absence of pattern language for questionnaire design, usage of various types of design patterns / relations in the created language and the very design of universal metadata-based questionnaire information system described in the created language.