Create a Neo4j® database connection using the URL http://localhost:7474/db/data, user name neo4j, and password matlab.

url = 'http://localhost:7474/db/data';
username = 'neo4j';
password = 'matlab';

neo4jconn = neo4j(url,username,password);

Check the Message property of the Neo4j connection object neo4jconn. The blank Message property indicates a successful connection.

neo4jconn.Message

ans =

     []

Search the database for nodes that have node label Person using the Neo4j database connection neo4jconn.

nlabel = 'Person';

nodeinfo = searchNode(neo4jconn,nlabel)

nodeinfo=7×3 table
         NodeLabels      NodeData                  NodeObject             
         __________    ____________    ___________________________________

    0     'Person'     [1×1 struct]    [1x1 database.neo4j.http.Neo4jNode]
    1     'Person'     [1×1 struct]    [1x1 database.neo4j.http.Neo4jNode]
    2     'Person'     [1×1 struct]    [1x1 database.neo4j.http.Neo4jNode]
    3     'Person'     [1×1 struct]    [1x1 database.neo4j.http.Neo4jNode]
    4     'Person'     [1×1 struct]    [1x1 database.neo4j.http.Neo4jNode]
    5     'Person'     [1×1 struct]    [1x1 database.neo4j.http.Neo4jNode]
    9     'Person'     [1×1 struct]    [1x1 database.neo4j.http.Neo4jNode]

nodeinfo is a table that contains information for each database node:

Access the node information for the first node in the table. The structure contains one property key and value.

node = nodeinfo.NodeData(1);
node{1}

ans = struct with fields:
    name: 'User1'

Access the node information using the row name as an index. The structure contains one property key and value.

nodeinfo.NodeData{'0'}

ans = struct with fields:
    name: 'User1'

Find the node degree for the first database node in the table. Specify outgoing relationships. There are two outgoing relationships from the first node in the table with relationship type knows.

degree = nodeDegree(nodeinfo.NodeObject(1),'out')

degree = struct with fields:
    knows: 2

Close the database connection.

close(neo4jconn)

Create a Neo4j® database connection using the URL http://localhost:7474/db/data, user name neo4j, and password matlab.

url = 'http://localhost:7474/db/data';
username = 'neo4j';
password = 'matlab';

neo4jconn = neo4j(url,username,password);

Check the Message property of the Neo4j connection object neo4jconn. The blank Message property indicates a successful connection.

neo4jconn.Message

ans =

     []

Search the database for nodes that have node label Person using the Neo4j database connection neo4jconn. Filter the results further by the property key and value for a specific person named User2. The nodeinfo output argument is a Neo4jNode object that contains node information.

nlabel = 'Person';

nodeinfo = searchNode(neo4jconn,nlabel,'PropertyKey','name', ...
    'PropertyValue','User2')

nodeinfo = 
  Neo4jNode with properties:

        NodeID: 2
      NodeData: [1×1 struct]
    NodeLabels: 'Person'

Access the node information. The structure contains a property key and value for User2.

nodeinfo.NodeData

ans = struct with fields:
    name: 'User2'

Find the node degree of the outgoing relationships. There is one outgoing relationship type knows for User2.

degree = nodeDegree(nodeinfo,'out')

degree = struct with fields:
    knows: 1

Close the database connection.

close(neo4jconn)