PPT Slide
Typed Tables and Table Hierarchies
- Now create typed tables (and subtables)
create table person of Person_t
(ref is oid user generated);
create table emp of Emp_t under person
(dept with options scope dept);
create table exec of Exec_t under emp;
create table student of Student_t under person;
create table dept of Dept_t
(ref is oid user generated,
mgr with options scope emp);