Add page for altering composite databases

Author: Hunterness

modules/ROOT/content-nav.adoc

@@ -131,6 +131,7 @@
 *** xref:database-administration/composite-databases/concepts.adoc[]
 *** xref:database-administration/composite-databases/create-composite-databases.adoc[]
 *** xref:database-administration/composite-databases/list-composite-databases.adoc[]
+*** xref:database-administration/composite-databases/alter-composite-databases.adoc[]
 *** xref:database-administration/composite-databases/delete-composite-databases.adoc[]
 *** xref:database-administration/composite-databases/querying-composite-databases.adoc[]
 *** xref:database-administration/composite-databases/sharding-with-copy.adoc[]

modules/ROOT/pages/database-administration/composite-databases/alter-composite-databases.adoc

@@ -0,0 +1,26 @@
+:description: This page describes how to alter composite databases.
+[role=enterprise-edition not-on-aura]
+[[composite-databases-alter]]
+= Alter composite databases
+
+Composite databases can be altered using `ALTER DATABASE`.
+
+== Syntax
+
+[options="header", width="100%", cols="1m,5a"]
+|===
+| Command | Syntax
+
+| ALTER DATABASE
+|
+[source, syntax, role="noheader"]
+----
+ALTER DATABASE name [IF EXISTS]
+SET DEFAULT LANGUAGE CYPHER {5\|25}
+[WAIT [n [SEC[OND[S]]]]\|NOWAIT]
+----
+|===
+
+== Alter database default language
+The `ALTER DATABASE` command can be used to set the default Cypher version for a composite database in addition to standard databases.
+For more information see link:{neo4j-docs-base-uri}/cypher-manual/current/queries/select-version/#alter-default-cypher-version[Cypher Manual -> Queries -> Select Cypher version].