Regarding Multiple collections for ArangoDB Graph Queries

[Vineel Yalamarthy]

   Hi All
 
   When we have linked data,does ArangoDB support queries across multiple collections of nodes and edges.

 Or for the entire application, do we need to have only TWO collections(one for vertices and one for edges) , If Yes, then why does it have a facility to create multiple collections  of edges and nodes.


Please let me know.

Regards
Venkata Vineel

[Michael Hackstein]

Hi,

right now our graph API only supports one edge and one vertex collection to make convenience functions as simple as possible.

Our traversals kann handle multiple vertex collections but only one edge collection and you have to define the collection of the start vertex.

However you can combine several traversals (use the result of one traversal for  the other, or you can use the more low-level functions of AQL like EDGES or NEIGHBORS for each edge collection.

We have multiple vertex and edge collections in traversals and graph API on our roadmap for the near future.

best,

Michael

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