Tweed, Rob; George James (2010年). “A Universal NoSQL Engine, Using a Tried and Tested Technology” (PDF). p. 25. 2014年3月14日閲覧。 “Without exception, the most successful and well-known of the NoSQL databases have been developed from scratch, all within just the last few years. Strangely, it seems that nobody looked around to see whether there were any existing, successfully implemented database technologies that could have provided a sound foundation for meeting Web-scale demands. Had they done so, they might have discovered two products, GT.M and Caché.....*”
