2014 年 10 巻 2 号 p. 165-172
Background, Aim and Scope. As an infrastructure of inventory data exchange, database management systems have been developed by governmental organizations, not-for-profit organizations, amongst others. Users can trust these systems since inventory data is registered after the database management body reviews the inventory data. However, timing of database revision and selection of an appropriate inventory data are controlled by member of the management body. Therefore, the openness of the system is also restricted. On the other hand, an open data exchange system, like Scenario I in the Shonan Guidance principle, says that it encourages data creation from the bottom-up with collective wisdom. However, reliability of the system is relatively low in this case. Therefore, ensuring compatibility with reliability and openness is important for data management systems. To address the issue, we developed and released this system.
Materials and Methods. To protect unintended data change after it is disclosed to the public, each inventory data provider can manage a data editor in the system. An inventory data provider may use a default inventory database, “IDEA”, to conceal intermediate flows. The default database supports consistency of the background data in the disclosed inventory data. Before being registered to the open inventory data library in the central server of the system, inventory data can be marked according to its review status. A specific review status can be added by a system user with a specifically coded reviewer key. A user may utilize the filtering function based on review status if inventory data users prefer to find a relatively-reliable inventory data. Downloaded data is imported to the LCA software and used in a system user’s LCA study.
Results and Discussion. The above-mentioned system is made and released as an infrastructure for encouraging inventory data exchange among LCA practitioners. As of November 2013, over 100 inventory data entries have been voluntarily uploaded by system users, such as an industry association and a private company, to the open inventory data library.
Conclusions. The data management system ensuring compatibility with reliability and openness is designed and released.
Recommendations and Perspectives. Producing good-governance of the data management system and providing incentives for contributing the system are needed to increase both the number of datasets available to the public and the reliability of the database itself.