One to one using object references : Object Table « Object Oriented Database « Oracle PL / SQL






  1. Oracle PL / SQL
  2. Object Oriented Database
  3. Object Table

One to one using object references

   
SQL>
SQL>
SQL> CREATE OR REPLACE TYPE officeType AS OBJECT
  2     (office_id        VARCHAR2(10),
  3      building_name    VARCHAR2(20))
  4     /

Type created.

SQL>
SQL> CREATE OR REPLACE TYPE personType AS OBJECT
  2     (person_id        VARCHAR2(10),
  3      person_name      VARCHAR2(30),
  4      person_office    REF officeType)
  5     /

Type created.

SQL>
SQL> CREATE TABLE Office OF officeType
  2     (office_id NOT NULL,
  3      PRIMARY KEY (office_id));

Table created.

SQL>
SQL> CREATE TABLE Programmer OF personType
  2     (person_id NOT NULL,
  3     PRIMARY KEY (person_id));

Table created.

SQL>
SQL> drop type officeType force;

Type dropped.

SQL> drop type personType force;

Type dropped.

SQL> drop table Office;

Table dropped.

SQL> drop table Programmer;

Table dropped.








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4.Create a table with user define varray as column type
5.Create a table with nested user defined type as column
6.Object table: a table of type
7.Use user-defined varray type as column type
8.Nested table
9.Create a table based on user-defined object only
10.Implementation of many to many using object references
11.Implementation of multiple inheritance relationship
12.Implementation of one to many using object references
13.Create table based on single data type
14.Create table with nested types
15.Create type and use it as table column
16.Use user-defined type to combine query logic
17.Create a new type and add it to a table
18.Multilevel aggregation relationships using nested tables