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Add a description for the usage to the Neo4j readme

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Wolfgang Huß 2023-09-26 14:48:31 +02:00
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neo4j/README.md
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@ -51,6 +51,18 @@ in `backend/.env`.
Start Neo4J and confirm the database is running at [http://localhost:7474](http://localhost:7474).
## Operations on Neo4j
### Import Neo4j Dump Locally in Docker
To import a dump into Neo4j running in a Docker container:
- we need to set `command: ["tail", "-f", "/dev/null"]` in the Neo4j block of `docker-compose.yml` on top level so the Neo4j database is in maintenance mode
- copy the dump into the running Docker container: `docker cp /path/to/dump <docker-image>:/existing-directory-in-docker/`
- connect to the Docker containers Neo4j terminal: `docker exec -it neo4j bash`
- to load the dump into the database we need the following command in this terminal: `neo4j-admin load --expand-commands --database=graph.db --from /backups/neo4j-dump --force`
- leave the terminal by entering: `exit`
## Commands
Here we describe some rarely used Cypher commands for Neo4j that are needed from time to time: