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Add 'Database Management Commands' to Neo4j readme

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- Fix of some headings and designations.
This commit is contained in:
Wolfgang Huß 2023-12-12 15:46:24 +01:00
parent 64ac68bd01
commit e4fabc47a0
1 changed files with 23 additions and 6 deletions
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neo4j/README.md
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@ -1,4 +1,4 @@
# Neo4J
# Neo4j 4.4
Human Connection is a social network. Using a graph based database which can
model nodes and edges natively - a network - feels like an obvious choice. We
@ -16,8 +16,7 @@ docker-compose up
```
You can access Neo4J through [http://localhost:7474/](http://localhost:7474/)
for an interactive cypher shell and a visualization of the graph.
for an interactive Cypher shell and a visualization of the graph.
## Installation Without Docker
@ -51,7 +50,7 @@ in `backend/.env`.
Start Neo4J and confirm the database is running at [http://localhost:7474](http://localhost:7474).
## Operations on Neo4j
## Operations on Neo4j 4.4
### Docker or Docker Compose
@ -143,7 +142,7 @@ $ kubectl -n default exec -it $(kubectl -n default get pods | grep ocelot-backen
***Cypher commands to show indexes and constraints***
```bash
# in browser command line or cypher shell
# in browser command line or Cypher shell
# show all indexes and constraints
$ :schema
@ -158,7 +157,7 @@ $ CALL db.constraints();
***Cypher commands to create and drop indexes and constraints***
```bash
# in browser command line or cypher shell
# in browser command line or Cypher shell
# create indexes
$ CALL db.index.fulltext.createNodeIndex("post_fulltext_search",["Post"],["title", "content"]);
@ -171,3 +170,21 @@ $ DROP CONSTRAINT ON ( image:Image ) ASSERT image.url IS UNIQUE
# drop all indexes and constraints
$ CALL apoc.schema.assert({},{},true) YIELD label, key RETURN * ;
```
### Database Management Commands
***Cypher commands to manage databases***
```bash
# in browser command line or Cypher shell
# show the default database
$ SHOW DEFAULT DATABASE
# show all databases
$ SHOW DATABASES
```
To set the default database by configuration, use `NEO4J_dbms_default__database` as an environment variable when starting Neo4j 4.4, see [Docker specific configuration settings](<https://neo4j.com/docs/operations-manual/4.4/docker/ref-settings/>).
If a database with this name does not exist, an empty database with this name is created and all other databases remain.
You can switch back to an existing database without damaging it.