Master-detail basics

Question

The JD3 "Creating a Tree Control" example found under Help/Help Topics/Tree Control and other Master/Detail examples work completely when used with with the Oracle 8i DEPT & EMP tables but not with tab1 & tab2 tables below. When using DEPT & EMP, JD see the data in both Master and Detail tables; When using tab1 & tab2, JD see only the data in Master (tab1).
In contrast, SQL*PLUS sees the contents of both tab1 and tab2.
drop table tab2;
drop table tab1;
create table tab1
(col1 number(2) primary key,
col2 varchar2(18));
insert into tab1 values (1,'A');
insert into tab1 values (2,'B');
create table tab2
(col1 number(2) primary key,
col2 varchar2(18),
col3 number(2) references tab1(col1));
insert into tab2 values (1, 'X', 1);
insert into tab2 values (2, 'Y', 1);
How are tab1 and tab2 different from DEPT and EMP as far as JD is concerned? That is, how can I modify the the script above to create a tab1 and tab2 so that JD can see the contents of both.

Answer 1

Are you sure you have defined an
association (Join Condition) in the
JDeveloper wizard which generated this.
The Script which creates the default
Scott/Tiger schema (Scott.sql) has the
following:
DROP TABLE DEPT;
CREATE TABLE DEPT
(DEPTNO NUMBER(2) CONSTRAINT PK_DEPT PRIMARY KEY,
DNAME VARCHAR2(14) ,
LOC VARCHAR2(13) ) ;
DROP TABLE EMP;
CREATE TABLE EMP
(EMPNO NUMBER(4) CONSTRAINT PK_EMP PRIMARY KEY,
ENAME VARCHAR2(10),
JOB VARCHAR2(9),
MGR NUMBER(4),
HIREDATE DATE,
SAL NUMBER(7,2),
COMM NUMBER(7,2),
DEPTNO NUMBER(2) CONSTRAINT FK_DEPTNO REFERENCES DEPT);
You may want to look at scott.sql for more details.
Sincerely,
Oracle JDeveloper Team http://technet.oracle.com