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graph database : ウィキペディア英語版
graph database
In computing, a graph database is a database that uses graph structures for semantic queries with nodes, edges and properties to represent and store data.
== Structure ==
Graph databases are based on graph theory. Graph databases employ nodes, properties, and edges.
* Nodes represent entities such as people, businesses, accounts, or any other item you might want to keep track of.

* Properties are pertinent information that relate to nodes. For instance, if ''Wikipedia'' were one of the nodes, one might have it tied to properties such as ''website'', ''reference material'', or ''word that starts with the letter w'', depending on which aspects of ''Wikipedia'' are pertinent to the particular database.

* Edges are the lines that connect nodes to nodes, or nodes to properties and they represent the relationship between the two. Most of the important information is stored in the edges. Meaningful patterns emerge when examining the connections and interconnections of nodes, properties, and edges

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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