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AllegroGraph [ 1 ] is a closed source Graph database , an emerging category of databases. In contrast with a Relational database , a graph database considers each stored item to have any number of relationships. These relationships can be viewed as links, which together form a network, or graph.
A graph database uses graph structures with nodes, edges, and properties to represent and store data. By definition, a graph database is any storage system that provides index-free adjacency.
Graph visualization is the study of how to turn abstract representations of graphs (think network diagrams of nodes and edges, rather than XY-coordinates) into diagrams.
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Search engine optimization ( SEO ) is the process of affecting the visibility of a website or a web page in a search engine 's "natural" or un-paid (" organic ") search results . [ jargon ] In general, the earlier (or higher ranked on the search results page), and more frequently a site appears in the search results list, the more visitors it will receive from the search engine's users.
By Dmitry Paranyushkin, Nodus Labs.