initial

Author: JPryce-Aklundh

modules/ROOT/pages/constraints/managing-constraints.adoc

@@ -344,6 +344,41 @@ Added 1 constraint.
 
 ======
 
+.Create `VECTOR` property type constraints
+======
+
+It is necessary to specify both the dimension and the coordinate type of any constrained `VECTOR` properties.
+The dimension must be greater than `0` and less or equal to `4096`.
+For more information, see xref:values-and-types/vectors.adoc[Values and types -> Vectors].
+
+.Create a constraint requiring `embedding` properties on `Movie` nodes to be of type `VECTOR<INT32>(42)`
+[source, cypher]
+----
+CREATE CONSTRAINT node_vector_constraint
+FOR (n:Movie) REQUIRE n.embedding IS :: VECTOR<INT32>(42)
+----
+
+.Result
+[source, queryresult]
+----
+Added 1 constraint.
+----
+
+.Create a constraint requiring `embedding` properties on `CONTAINS` relationships to be of type `VECTOR<FLOAT32>(1536)`
+[source, cypher]
+----
+CREATE CONSTRAINT rel_vector_constraint
+FOR ()-[r:CONTAINS]->() REQUIRE r.embedding IS :: VECTOR<FLOAT32>(1536)
+----
+
+.Result
+[source, queryresult]
+----
+Added 1 constraint.
+----
+
+======
+
 [[create-property-type-constraint-union-type]]
 ==== Create property type constraints with a union type
 
@@ -401,6 +436,7 @@ The allowed property types for property type constraints are:
 * `ZONED DATETIME`
 * `DURATION`
 * `POINT`
+* `VECTOR<TYPE>(DIMENSION)` label:new[Introduced in Neo4j 2025.xx]
 * `LIST<BOOLEAN NOT NULL>`
 * `LIST<STRING NOT NULL>`
 * `LIST<INTEGER NOT NULL>`
@@ -414,6 +450,10 @@ The allowed property types for property type constraints are:
 * `LIST<POINT NOT NULL>`
 * Any closed dynamic union of the above types, e.g. `INTEGER | FLOAT | STRING`.
 
+[NOTE]
+A property type constraint cannot be created for `LIST<VECTOR NOT NULL>`.
+This is because it is not possible to store lists of xref:values-and-types/vectors.adoc[`VECTOR`] values.
+
 For a complete reference describing all types available in Cypher, see the section on xref::values-and-types/property-structural-constructed.adoc#types-synonyms[types and their synonyms].
 
 [[fail-to-create-property-type-constraint-invalid-type]]
@@ -697,6 +737,7 @@ Additionally, some constraints cannot coexist and attempting to create them toge
 This includes:
 
 * Property type constraints on the same label/relationship type and property but with different property types.
+This includes `VECTOR` types with differing dimensions or coordinate types.
 * Property uniqueness and key constraints on the same label/relationship type and property combination.
 
 However, some constraint types are allowed on the same label/relationship type and property combination.
@@ -1653,6 +1694,9 @@ label:default-output[]
 == DROP CONSTRAINT
 
 Constraints are dropped using the `DROP CONSTRAINT` command.
+It is possible to drop a constraint that was created in a later Cypher version than the one currently in use.
+For example, although `VECTOR` property type constraints were added in Cypher 25, such constraints can still be dropped using Cypher 5.
+
 For the full command syntax to drop constraints, see xref:constraints/syntax.adoc#drop-constraint[Syntax -> DROP CONSTRAINT].
 
 [NOTE]

modules/ROOT/pages/constraints/syntax.adoc

@@ -122,6 +122,7 @@ Where `<TYPE>` is one of the following property types:
 * `ZONED DATETIME`
 * `DURATION`
 * `POINT`
+* `VECTOR<TYPE>(DIMENSION)` label:new[Introduced in Neo4j 2025.xx]
 * `LIST<BOOLEAN NOT NULL>`
 * `LIST<STRING NOT NULL>`
 * `LIST<INTEGER NOT NULL>`
@@ -135,6 +136,12 @@ Where `<TYPE>` is one of the following property types:
 * `LIST<POINT NOT NULL>`
 * Any closed dynamic union of the above types, e.g. `INTEGER | FLOAT | STRING`.
 
+[NOTE]
+A property type constraint cannot be created for `LIST<VECTOR NOT NULL>`.
+This is because it is not possible to store lists of `VECTOR` values.
+Additionally, `VECTOR` property type constraints must be created with a specific dimension and coordinate value, where the dimension must be greater than `0` and less or equal to `4096`.
+For more information, see xref:values-and-types/vectors.adoc[Values and types -> Vectors].
+
 Allowed syntax variations of these types are listed in  xref::values-and-types/property-structural-constructed.adoc#types-synonyms[Types and their synonyms].
 
 For examples on how to create property type constraints, see  xref:constraints/managing-constraints.adoc#create-property-type-constraints[Create, show, and drop constraints -> Create property type constraints].

modules/ROOT/pages/deprecations-additions-removals-compatibility.adoc

@@ -22,6 +22,36 @@ Cypher 25 was introduced in Neo4j 2025.06 and can only be used on Neo4j 2025.06+
 Features removed in Cypher 25 are still available on Neo4j 2025.06+ databases either by prepending a query with `CYPHER 5` or by having Cypher 5 as the default language for the database.
 For more information, see xref:queries/select-version.adoc[].
 
+[[cypher-deprecations-additions-removals-2025.xx]]
+== Neo4j 2025.xx
+
+=== New in Cypher 25
+
+[cols="2", options="header"]
+|===
+| Feature
+| Details
+
+a|
+label:functionality[]
+label:new[]
+
+[source, cypher, role="noheader"]
+----
+CREATE CONSTRAINT node_vector_constraint
+FOR (n:Movie) REQUIRE n.embedding IS :: VECTOR<INT32>(42)
+----
+
+[source, cypher, role="noheader"]
+----
+CREATE CONSTRAINT rel_vector_constraint
+FOR ()-[r:CONTAINS]->() REQUIRE r.embedding IS :: VECTOR<FLOAT32>(1536)
+----
+
+a| Introduced `VECTOR` property type constraints.
+For more information, see xref:constraints/managing-constraints.adoc#create-property-type-constraints[Create property type constraints].
+|===
+
 [[cypher-deprecations-additions-removals-2025.06]]
 == Neo4j 2025.06