document statement types

Author: nadja-muller

modules/ROOT/pages/queries/index.adoc

@@ -6,5 +6,6 @@ It also contains information about Cypher expressions.
 
 * xref:queries/concepts.adoc[]
 * xref:queries/basic.adoc[]
+* xref:queries/statement-types.adoc[]
 * xref:queries/expressions.adoc[]
 * xref:queries/case.adoc[]

modules/ROOT/pages/queries/statement-types.adoc

@@ -0,0 +1,12 @@
+= Statement types
+:description: This section provides an overview of the different Statement types in Cypher.
+include::https://raw.githubusercontent.com/neo4j-graphacademy/courses/main/asciidoc/ads/data-analysis.adoc[]
+
+Cypher knows the following different statement types:
+
+* Administration command are documented in the link:{neo4j-docs-base-uri}/operations-manual/current/[Operations Manual]. An example of an administration command would be `CREATE DATABASE movies`
+* Schema modification, which modify indexes and constraints, such as `CREATE CONSTRAINT ...`
+* Read query, which do not modify the data on your database, such as `MATCH (n) RETURN n`
+* Write query, which modify the data on your database, such as `CREATE (n) RETURN n`
+
+Queries executed in the same transaction must either be of the same type, or a combination of schema modifications and read commands.