Hi Ido, Do you mean you want a central place to store the names of all the properties used on some types of object? Kind-of like a schema, so your application code knows what properties are available before starting a traversal?
If that is the case, we have a similar requirement, and we solved it in the following way. Most of our graphs are collected into 'datasets', which means a collection of data that we expect to analyse as a whole, and therefor we like to keep some metadata about the dataset. So we root the graph in a node called the dataset node, and the graph of data is built as a tree structure beneath that node. Then we connect a properties node to the dataset node, and this is the root of another small graph, basically just a depth-1 tree of nodes, each representing properties of a particular type. Each property node has a key with the name of the property, and the value is the number of occurences in the dataset. This allows us to show the list of properties in the GUI when a user is preparing an analysis. An example line through the properties metadata graph might look like: dataset--PROPERTIES-->properties--PROPERTY(float)-->property(x:10,y:20,z:7) Is this the kind of think you are looking for? Regards, Craig On Wed, Feb 9, 2011 at 10:36 AM, Ido Ran <[email protected]> wrote: > Hi, > I have a question about how to design a database that has graph data > structure in it's core yet have other data which is not graph in nature > connected to it. > In our model we have graph of objects that are connect with links - which > is > a prefect match for neo4j. > Then on each object and and link we store properties of various types so we > need to store list of all the property types we store. > We can represent them as graph as well but that fells unnatural. The other > way is to combine RDBMS with neo4j but then we run into sync. and > deployment > problems. > > Any help will be great. > Thank you, > Ido > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
