Merging nested associations. A better way to do this?
43036
How to organically merge nested associations?
125605
How can I get all pairs of values from an association with elements key->list
113811
Hibernate recursive many-to-many association with the same entity
97261
Are nested transactions allowed in MySQL?
128027
Converting hierarchies of rules to associations
138755
Designing a friendships database structure: Should I use a multivalued column?
34922
How to write a rollup summary trigger for a lookup relationship
46694
Foreign key referring to primary keys across multiple tables?
134117
Defining foreign key relationships for Rails' models
41821
How do I do reflexive self-join relationships in ActiveRecord?
133232
Deleted object would be re-saved by cascade (remove deleted object from associations)
85390
MERGE a subset of the target table
112466
Concatenate one-to-many field in single result?
45949
Is there a simpler way of drawing relation maps?
141433
What is the best method to merge two PHP objects?
152146
Pattern matching Association in rules
155351
Rails: Has and belongs to many (HABTM) -- create association without creating other records