Comments on: Hierarchies in SQL? OQGRAPH engine backend preview http://openquery.com/blog/hierarchies-in-sql-oqgraph-engine-backend-preview About MySQL, Drizzle, MariaDB and more! Thu, 02 Feb 2012 21:40:24 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Zak Greant http://openquery.com/blog/hierarchies-in-sql-oqgraph-engine-backend-preview/comment-page-1#comment-1004 Zak Greant Thu, 30 Apr 2009 02:42:02 +0000 http://openquery.com/blogs/hierarchies-in-sql-oqgraph-engine-backend-preview#comment-1004 The data sets that Arjen has entered into the table describe points in a graph (nodes) and connections between the nodes (called edges.) 1,2 describes two nodes and a connection between them, as do 1,3 and 2,4. The graph of these connections is just a simple line with 4 points. (3)-(1)-(2)-(4) For more information on graph theory, see: <a href="http://en.wikipedia.org/wiki/Graph_(mathematics)" rel="nofollow">http://en.wikipedia.org/wiki/Graph_(mathematics)</a> The data sets that Arjen has entered into the table describe points in a graph (nodes) and connections between the nodes (called edges.)

1,2 describes two nodes and a connection between them, as do 1,3 and 2,4.

The graph of these connections is just a simple line with 4 points.

(3)-(1)-(2)-(4)

For more information on graph theory, see:

http://en.wikipedia.org/wiki/Graph_(mathematics)

]]> By: GRAPH engine post-conf update « Open Query blog http://openquery.com/blog/hierarchies-in-sql-oqgraph-engine-backend-preview/comment-page-1#comment-942 GRAPH engine post-conf update « Open Query blog Thu, 02 Apr 2009 08:48:15 +0000 http://openquery.com/blogs/hierarchies-in-sql-oqgraph-engine-backend-preview#comment-942 [...] Stewart, Brian, Mark, Paul, and others) who answered questions and looked things up, the earlier backend demo can now be executed from a MySQL 5.1 server with the OQGRAPH Engine plugin loaded. In other words, [...] [...] Stewart, Brian, Mark, Paul, and others) who answered questions and looked things up, the earlier backend demo can now be executed from a MySQL 5.1 server with the OQGRAPH Engine plugin loaded. In other words, [...]

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