Literature-based and Architecture-based Modernization

Organizational purpose or function changes usually concern with information systems that have to be modernized. However, there are difficulties of making information system modernization decisions because of suppliers and clients may have different notions about modernization. In this paper, we present a review of statements for information system modernization. The objective of this review is to describe current reported knowledge in terms of what kind of modernization is defined and what the domain of modernization is. We found 42 statements for modernization from 36 papers. These findings show that the concept of modernization is unestablished. However, if we want to have similar notions about information system modernizations then we have to be transparent where the changes have effect. The analysis of relationships between the entities of enterprise architecture is presented to help in making information system modernization decisions. The case-based lessons concern the semantic assets of Finnish social welfare. The suppliers of three client information systems (CIS) were evaluated and they answered that 2-58 % of the semantic assets are unknown. Furthermore, there are described the main data groups and logical data stores which are not allowed in the TOGAF content metamodel.