Module: Database Manager

`DBManagement`

Create DBManagement module

Examples:

>>> from promg.modules.db_management import DBManagement
>>> db_manager = DBManagement()

`clear_db(replace=True)`

Replace or clear the entire database by a new one.

Note

Note about difference between replacing and clearing.

Replace: results in an Empty database that is completely replaced with a new database.
- Replacing a database is faster than clearing a database.
- Only possible when
  - you have an Neo4j enterprise license
  - you are running a local instance on the free Neo4j desktop version
Clear: Results in an empty database, however constraints are still in place.
- Clearing a database takes longer
- Independent of license

Parameters:

Name	Type	Description	Default
`replace`	`bool`	boolean to indicate whether the database may be replaced	`True`

Examples:

>>> db_manager.clear(replace=True)
Results in an Empty database that is completely replaced with a new database
    (i.e. constraints are also removed)

>>> db_manager.clear(replace=False)
Results in an empty database, however constraints are still in place.
Clearing an entire database takes longer.

`set_constraints()`

Set constraints in Neo4j instance.

sysId property is used as index for (:Entity) nodes

Examples:

>>> db_managers.set_constraints()
sysId is used as index for (:Entity) nodes

`get_all_rel_types()`

Get all relationship types that are present in Neo4j instance

Returns:

Type	Description
`List[str]`	A list of strings with all relationship types present in the Neo4j instance

`get_all_node_labels()`

Get all node labels that are present in Neo4j instance

Returns:

Type	Description
`Set[str]`	A list of strings with all node labels present in the Neo4j instance

`get_statistics()`

Get the count of nodes per label and the count of relationships per type

Returns:

Type	Description
`List[Dict[str, any]]`	A list containing dictionaries with the label/relationship and its count

`print_statistics()`

Print the statistics nicely using tabulate