The following query maps item names to the three different guids found within the ResourceAssociation table, allowing you to understand its contents better:
SELECT
vi1.[Guid] AS ResourceAssociatiopnTypeGuid,vi1.Name AS ResourceAssociatiopnType,
vi2.[Guid] AS ParentResourceGuid,vi2.Name AS ParentResource,
vi3.[Guid] AS ChildResourceGuid,vi3.Name AS ChildResource
FROM vItem vi1
JOIN ResourceAssociation ra ON ra.ResourceAssociationTypeGuid = vi1.[Guid]
JOIN vItem vi2 ON vi2.[Guid] = ra.ParentResourceGuid
JOIN vItem vi3 ON vi3.[Guid] = ra.ChildResourceGuid
ORDER BY vi1.Name ASC