I'm starting to think that a lot of my tables could be replaced by only a graph db:

For example: I have 4 tables: accounts, votes, posts, relationships

but I can represent all these in a graph table with different edges, NODE1 -> type of relation -> NODE2 account -> vote_+1 -> post account -> wrote -> post account -> friend -> account2

is there a difference of performance or other between them?

I'm starting to think that a lot of my tables could be replaced by only a graph db:

For example: I have 4 tables: accounts, votes, posts, relationships

but I can represent all these in a graph table with different edges,

NODE1 -> type of relation -> NODE2
account -> vote_+1 -> post
account -> wrote -> post
account -> friend -> account2

is there a difference of performance or other between them?