systemdb.adoc

SystemDB

In Neo4j 4.0 the concept of multi-database was introduced. There’s now a database called system which contains some internal information, e.g. configured permissions. Those can be exposed by APOC.

Caution

Do not rely on the data structures within system database. They are a non-public implementation details of Neo4j and might change within minor release updates.

Table 1. Procedures

Qualified Name	Type	Release example$generated-documentation/apoc.systemdb.graph.adoc example$generated-documentation/apoc.systemdb.execute.adoc
apoc.systemdb.export.metadata [book]	label:procedure[]	label:apoc-full[]

isType example

CALL apoc.systemdb.graph() YIELD nodes, relationships RETURN *;
CALL apoc.systemdb.execute('SHOW DATABASES') YIELD row RETURN row.name as dbName;
CALL apoc.systemdb.execute(["CREATE USER foo SET PASSWORD 'test'", "GRANT ROLE myRole TO foo"])