The DDL/DML for the STUDENTS_GRAPH property graph contains the column height in the students and persons table. This data redundancy is unnecessary and confusing.
I suggest to remove the column in the students table.
See https://docs.oracle.com/en/database/oracle/oracle-database/23/sqlrf/graph_table-operator.html#GUID-CA6A600E-2087-46F8-A081-C6F3F01CF305__GUID-09D21458-518A-4220-B524-389E0A63AEE5
