I have two database instances: one remote and one local. I want to dump the local database and merge it with remote (structure of nodes & relationships are the same). How may I do it? Simple neo4j-admin dump & load will help?
This is not possible with the dump & load command.
To do what you want, you need to export your local database as CSVs and then make some LOAD CSV queries with MERGE command.
To export your database as CSVs, take a look at APOC with the export procedures : https://neo4j-contrib.github.io/neo4j-apoc-procedures/#_export_import