Database management device using key-value store with attributes, and key-value-store structure caching-device therefor

摘要

Provided is a mechanism wherein key-value structure data are effectively combined, and dynamic changes in the data structure and amount of data are coped with flexibly; and wherein the throughput in frequent reading of simple tables is improved with this mechanism. A flexible data model is built, by making a referring mechanism for referring to attributes, and a referred-to mechanism wherein references to attributes are made, to be a "referring –- referring" element and a "referred-to –- referred-to" element; making a component by sandwiching key-value-store structure data; and combining components having multiple attributes with each other, as a "referring -- referred-to" relationship. Furthermore, receiving search results as a key-value-store structure cache will contribute in simplifying accesses by conventional application programs to the aforementioned flexible data model, which by extension will contribute in making the whole application program more high-speed.