The answer to question 1 is no. All relationships have a direction. 

2 I don't really understand what you are asking. Sorry. 

Sent from my iPhone

> On Aug 26, 2014, at 15:19, Mohana Krishna <[email protected]> wrote:
> 
> Someone please help me out.
> 
>> On Saturday, 23 August 2014 20:02:17 UTC+5:30, Mohana Krishna wrote:
>> 1) Does Neo4j allow undirected edges between two nodes? If so, what is 
>> syntax?
>> 
>> 2) I want to query my graph db to find cliques of fixed size but each node 
>> in the clique is of different class. 
>>   
>> Eg: If there are nodes of three classes say A,B,C,D in graph db, I wish to 
>> find all size-3 cliques and size-4 cliques such that each of nodes in a 
>> given clique belong to different classes.
>> 
>>  I was not able to formulate query precisely. What is the efficient way of 
>> querying this?
>> 
>> 
>> Somebody please help. Thanks.
> 
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