https://github.com/orientechnologies/orientdb/issues/2147


On 19 March 2014 05:34, Luca Garulli <[email protected]> wrote:

> Hi,
> this approach is followed by many users when they need a lightweight way
> to create relationships. For such reason we'd like to introduce
> mono-directional edges in 2.0, because all the edges now are always
> bi-directional. With mono-directional edge, under the hood will be
> identical to have a LINK (documentdb api), but at least you remain at
> GraphDB API level.
>
> Lvc@
>
>
>
> On 18 March 2014 23:25, Arve Knudsen <[email protected]> wrote:
>
>> Odysseas, thanks for chiming in. Your assessment sounds identical to my
>> own thinking after working with OrientDB and reading up on its graphs and
>> document DBs. Have you yet created ODocuments (not vertices) with
>> connections between them? I understand that this should be possible, as a
>> lighter alternative to graphs, but I haven't figured out how yet. See also
>> my 
>> SO<http://stackoverflow.com/questions/22492248/orientdb-how-do-i-insert-a-document-with-connections-to-multiple-other-documen>question
>>  on the matter.
>>
>> Thanks,
>> Arve
>>
>>
>> On Tue, Mar 18, 2014 at 11:14 PM, Odysseas <[email protected]>wrote:
>>
>>> Arve,
>>>
>>> For various reasons, including the support for asynchronous queries, we
>>> have now moved to a "mixed" data model in our application where we use
>>> vertices and edges to create the objects
>>> for persistence but use the document-based API on occasion when the
>>> blueprints API does not do what we need to do. Under the covers OrientDB is
>>> using the document
>>> model to store data so even if you use the Blueprints API to construct
>>> your data model, you can still use the more low level document API. I just
>>> wanted to let you know that that option is available but I am sure the
>>> OrientDB guys will correct me if what we are doing is not the best way to
>>> go about using OrientDB.
>>>
>>> Odysseas
>>>
>>>
>>> On Tuesday, March 18, 2014 4:06:34 PM UTC-4, Arve Knudsen wrote:
>>>
>>>> After studying the subject, I think I want to go with the document
>>>> database model for now, and use links between documents (as opposed to
>>>> edges between vertices). Are there any examples online of inserting a
>>>> document that connects to several other documents (document links, not
>>>> edges), and of reading the same documents out of the database (i.e., a
>>>> parent document with a set of child documents of another class)?
>>>>
>>>> Arve
>>>>
>>>>
>>>> On Tue, Mar 18, 2014 at 9:02 PM, Arve Knudsen <[email protected]>wrote:
>>>>
>>>>> Thanks, Andrey. I think I understand a little more about the
>>>>> relationship between Orient's document and graph databases now (I also
>>>>> studied Luca's slides).
>>>>>
>>>>> Best,
>>>>> Arve
>>>>>
>>>>>
>>>>> On Tue, Mar 18, 2014 at 2:06 PM, Andrey Lomakin 
>>>>> <[email protected]>wrote:
>>>>>
>>>>>> Hi,
>>>>>> You can use in SQL queries both graph and document operators.
>>>>>>
>>>>>>
>>>>>> On Tue, Mar 18, 2014 at 2:50 PM, Arve Knudsen <[email protected]>wrote:
>>>>>>
>>>>>>> Nhat, that is the document database API is it not? I'm wondering if
>>>>>>> the graph API supports asynchronous querying. Bear in mind that I 
>>>>>>> haven't
>>>>>>> yet used the graph API so it's all a bit unclear to me still. I think I
>>>>>>> might want to use it though since I need to connect database records to
>>>>>>> each other.
>>>>>>>
>>>>>>> Arve
>>>>>>>
>>>>>>>
>>>>>>> On Tue, Mar 18, 2014 at 1:42 PM, Nhat Nguyen <
>>>>>>> [email protected]> wrote:
>>>>>>>
>>>>>>>> I am not sure but couldn“t you use the "OSQLAsynchQuery"? see 
>>>>>>>> link<https://github.com/orientechnologies/orientdb/wiki/Document-Database#asynchronous-query>
>>>>>>>>
>>>>>>>> On Tuesday, March 18, 2014 12:54:19 PM UTC+1, Arve Knudsen wrote:
>>>>>>>>>
>>>>>>>>> Hi
>>>>>>>>>
>>>>>>>>> Does the OrientDB graph API support asynchronous queries?
>>>>>>>>>
>>>>>>>>> Thanks,
>>>>>>>>> Arve
>>>>>>>>>
>>>>>>>>  --
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>>>>>>
>>>>>>
>>>>>> --
>>>>>> Best regards,
>>>>>> Andrey Lomakin.
>>>>>>
>>>>>> Orient Technologies
>>>>>> the Company behind OrientDB
>>>>>>
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