9.1. Meta Graph

Returns a virtual graph that represents the labels and relationship-types available in your database and how they are connected.

Table 9.1. Procedures
`CALL apoc.meta.graphSample()`	examines the database statistics to build the meta graph, very fast, might report extra relationships
`CALL apoc.meta.graph`	examines the database statistics to create the meta-graph, post filters extra relationships by sampling
`CALL apoc.meta.subGraph({labels:[labels],rels:[rel-types],excludes:[label,rel-type,…]})`	examines a sample sub graph to create the meta-graph
`CALL apoc.meta.data`	examines a subset of the graph to provide a tabular meta information
`CALL apoc.meta.schema`	examines a subset of the graph to provide a map-like meta information
`CALL apoc.meta.stats yield labelCount, relTypeCount, propertyKeyCount, nodeCount, relCount, labels, relTypes, stats`	returns the information stored in the transactional database statistics

Table 9.2. Functions
`apoc.meta.cypher.type(value)`	type name of a value (`INTEGER,FLOAT,STRING,BOOLEAN,RELATIONSHIP,NODE,PATH,NULL,MAP,LIST OF <TYPE>,POINT,DATE,DATE_TIME,LOCAL_TIME,LOCAL_DATE_TIME,TIME,DURATION`)
`apoc.meta.cypher.isType(value,type)`	returns a row if type name matches none if not
`apoc.meta.cypher.types(node or relationship or map)`	returns a a map of property-keys to their names

In the case of LIST you may have many results, depending on the content. In the event that all contents are of the same type, will you have the LIST OF <TYPE>, otherwise if the type is different, will you get LIST OF ANY

If no type was found, the function return name of the class.

Table 9.3. Functions Deprecated
`apoc.meta.type(value)`	type name of a value (`INTEGER,FLOAT,STRING,BOOLEAN,RELATIONSHIP,NODE,PATH,NULL,MAP,LIST`)
`apoc.meta.isType(value,type)`	returns a row if type name matches none if not
`apoc.meta.types(node or relationship or map)`	returns a a map of property-keys to their names

If no type was found, the function return name of the class.

isType example.

MATCH (n:Person)
RETURN apoc.meta.isType(n.age,"INTEGER") as ageType