Master detail without foreign key

Hi.
I would like to know whether it is possible in JDeveloper to have a master-detail form for two tables that do not have a phisical foreign key constraint (they do have a logical one, though)?
I tried creating an Association between the two Entities, but I do not see any effect.

This should work without dependency on the database having the relation defined.
Are you using ADF Business Components?
If so can you detail what you did and what is the behavior you see?
Also remember that you'll need to set the link at the view level also.

Similar Messages

FOREIGN KEY CONSTRAINT 의 MASTER TABLE NAME 의 확인

제품 : ORACLE SERVER
작성날짜 : 1995-11-02
FOREIGN KEY CONSTRAINT 의 MASTER TABLE NAME 의 확인
===================================================
다음은 FOREIGN KEY CONSTRAINT 이름으로 REFERENCE 하는 TABLE
(MASTER TABLE)을 찾는 SQL SCRIPT이다.
col Primary_key_table format a20
col Constraint_name format a20
select a.object_name Primary_Key_table,
c.name Constraint_name
from dba_objects a,
sys.cdef$ b,
sys.con$ c
where c.name = 'EMP_FOREIGN_KEY' -- CONSTRAINT NAME
and b.con# = c.con#
and b.robj# = a.object_id
/

The set of constraints as you show it is valid, but will likely result in a lot of violations since both child columns are larger than the parent. The Oracle 2256 error has nothing to do with data validation, nor with the different lengths of the columns. The documentation says
02256, 00000, "number of referencing columns must match referenced columns"
// *Cause: The number of columns in the foreign-key referencing list is not
// equal to the number of columns in the referenced list.
// *Action: Make sure that the referencing columns match the referenced
// columns.Look at the actual statement that the client ran. It will be different than the one you posted. one of the two column lists will have more columns than the other.

Get Foreign key Details

Hai all,
Can I get all the details of foreign key used in a database..is it possible ?let it be MS Access ,SQL,DB2
Kindly clarify..

See the javadocs for DatabaseMetaData class under java.sql

Creation of Master-Detail Form for new record.

Hi Friends,
This is my requirements. Please help me to complete my task.
I have two tables Master and Detail. Detail have foreign key relationship with Master.
I want to design the page Master table columns are in header portion and Detail table columns are in af:table.
When i load the page, it should contain empty header portion and one empty row in the table and table should contain Create, Edit and Delete button.
I want to use one Save (Commit Operation) only. If i save the record it should insert first in Master table and then detail table.
I gone through lot of documents but not able to find anything related to my need.
Please if any link or sample or document is there means please share it.
Thanks & Regards
Vimalan Balan

Hi Frank,
Yes Frank, I am planning to create master and detail within one form and one submit action to save the master and detail values in the table. In detail table i want to have only create and delete operation for the rows.
Example:
Master - Header
PO ID -- input value
Name -- input value
Detail - table row.
<create> <delete>
Select Amount Exchange Rate
<save> --- this is for entire master and detail. Need to save the master and detail after user entered in the screen.
Please guide me or help or provide solution to solve the problem.
Thanks & Regards
Vimalan Balan

Insert record in master detail relationship

Hi,
I have the following situation. I have two tables (master and detail in 1:1 relationship). What I want to do is to skip through the master table and insert a record into the detail table containing only the id of the master table (foreign key column in detail table).
My tables look like this:
Master:
ID
NAME
ADRESS
Detail:
ID
DETAILS
MASTERID (foreign key)
For I am not experienced in PL/SQL does anybody give me an idea on how to do this. I think it is suitable to have a procedure solving this...
Thanks in advance!
Tino

Here you go:
CREATE TABLE dt_test_master
(     id           number primary key,
     descr      varchar2(10)
INSERT INTO dt_test_master VALUES(1, 'Master 1')
INSERT INTO dt_test_master VALUES(2, 'Master 2')
CREATE TABLE dt_test_child(id number, master_id number, col1 varchar2(10))
alter table dt_test_child add constraint dt_test_child_fk_master
foreign key(master_id) references dt_test_master
CREATE SEQUENCE dt_test_child_id_seq
CREATE OR REPLACE PROCEDURE p_CreateChild(     an_MasterId dt_test_child.master_id%TYPE,
av_Col1          dt_test_child.col1%TYPE
IS
BEGIN
     INSERT
     INTO
          dt_test_child
          (     id,
               master_id,
               col1
     VALUES
          (     dt_test_child_id_seq.NEXTVAL,
               an_MasterId,
               av_Col1
END;
SQL> exec p_CreateChild(1,'Child1');
PL/SQL procedure successfully completed.
SQL> exec p_CreateChild(1,'Child2');
PL/SQL procedure successfully completed.
SQL> exec p_CreateChild(2,'Child1');
PL/SQL procedure successfully completed.
SQL> exec p_CreateChild(3,'Child1');
BEGIN p_CreateChild(3,'Child1'); END;
ERROR at line 1:
ORA-02291: integrity constraint (TYLERD.DT_TEST_CHILD_FK_MASTER) violated - parent key not found
ORA-06512: at "TYLERD.P_CREATECHILD", line 8
ORA-06512: at line 1HTH
David

Oracle Portal master details default value set up.

Hi All,
Using Oracle Portal to create a master details form.
I have tried to set up the details table foreign key. I used the master table primary key as a default value for the details table foreign key.
Does anyone know what the correct syntax is when I fill in the Default Value field on the "Formatting and Validation Options for Detail Row" tab?
Also related to this: What should I choose from the drop down menu for the "Default Value Type"?
Best Regards.
Liviu Minda & Paul Williams
Cape Town City Council.

Hi Liviu & Paul,
NOTE: The following is applicable to Portal version 3.0.8 and above .
Well, if you want that the Detail table Foreign key should get the value of The Mater Table Primary key, then you need not do anything like setting the Default value for the Foreign Key of the Detail section. It works like this :-
Operation INSERT:
When you are INSERTing a master record and the corresponding detail records, just fill up the master form and need not worry about the Foreign key(FK) in the Detail rows. Fill up the other columns for the detail rows and choose the appropriate action for each of the detail rows i.e. INSERT and click on the SAVE button. If the FK in the Detail have been left blank, then while inserting into the detail table, the Primary Key (PK) value of the master will be picked up and inserted . However, if you specify any value in the FK column of the Detail, then the specified value would override the PK value of the master.
Generally, what ppl do is make the FK in the detail of type Hidden.. so users cannot tamper with the FK values.
Hope this helps.
null

Populate the foreign key automatically

HI All!
I have a form in which there are two data blocks One is emp_master and other is salary_details.I have a foreign key salary_code in Emp_master and similarly Salary_code as primary key in salary details.I have used two list item in place of Emp_id and Salary_code.I want that when I select the emp_id as 10 from the list automatically salary_code list item should get populated by 1 item in the list item.Similary the rest should follow .Please someone look into this matter it would be a gr8t help to me.
Thanks

Abha,
I would not use list items for this. Instead, use a multi-record text box with a scroll bar. It looks and behaves like a t-list, but is much easier to code and manage.
Use the datablock wizard to create the master-detail relationship. When you use the wizard, all the code will be generated for you. Then use the layout wizard, and display multiple records with scroll bars.
BTW, it is customary to have the primary key in the master, and the foreign key in the details. In your case it is backwards.
Also see
http://www.oracle.com/technology/obe/obe_as_10g/bi/forms/formsmasterdetailobe.htm

Master-Detail only shows the first record of the Master's data

I have an ADF Master Table, Detail table. I use ExcuteWithParams on the Master Table. When executed from a button (Button has partial submit = true for button, Master Table has PartialTrigger on button, and Detail table has PartialTrigger on Master table and button), it works fine. However, I want to pass the parameters in pageFlowScope variables, and have the ExecuteWithParams invoked upon page load. When I try to do this, the Detail table only shows the first record of the Master's data, no mater what row is clicked on the Master table.
Master table now has no PartialTrigger, and Detail table has PartialTrigger on Master table. In my pageDef, I used an invoke action as follows:
<invokeAction Binds="ExecuteWithParams" id="invokeExecuteWithParams"
Refresh="always"/>
What am I missing? I am using verion 11.1.1.3. Any help would be much appreciated.
Thanks,
Jessica

Yes, it works when I drag the data control as a master detail without filtering any data. I want the user to be able to set search criteria to filter the data in the master table (For example, only pull back data with a transaction date between :startdate and :enddate). I can get it to work if I execute from an executewithparams button on the page, but not if I want to invoke the executewithparams upon page load with the parameter set by pageflowscope variables.
Thank you for responding.
Jessica

OWB : import foreign key failed

Hi,
I have created my Server Model Diagrams in Oracle Designer. The generation of my model in the target database is correct.
When i try to import my tables in OWB, tables, primary keys and unique keys are imported without foreign keys.
The connection in OWB capture objects in the repository Oracle Designer.
Do you explain that ?
2 days ago, the problem didn't exist.
Thanks for you help.

I had similar issue when importing 10.2.0.1.31 objects into 10.2.0.2 version.
It was resolved by re-importing the metadata for each module and synchronize all locations.
Raj

Necessary to have foreign keys ?

Dear All,
We have a oracle database, in which there is no foreign key constraints defined. But we are able to join the tables with the appropriate columns and getting the output of the query perfectly.
Now, is that mandatory to have foreign key columns defined or the current design is fine. Please help me in this, by discussing the advantages and disadvantages.
Thanks in advance.
Anand.

Best practice would absolutely be to have foreign keys in an OLTP system.
Without foreign keys, you are guaranteed to have data that violates referential integrity eventually. Unless you happen to be lucky enough to work on an application that will never have bugs, you need Oracle to enforce referential integrity.
Without foreign keys, your data model is much harder to understand. That means that when new developers come on the project, when people want to point various tools at the database, etc. those people and tools will not be able to use foreign keys to determine how the tables relate. That inevitably means that it will take them far longer to get up to speed and they are far more likely to make errors. If you ever point an automated tool at the database to generate an ERD, that tool will be nearly useless since it can't figure out how the tables relate.
Without foreign keys, you're depriving the optimizer of information that may allow it to generate better plans.
Yes, you need to index foreign keys in the child table, but you almost certainly need these indexes for queries anyway. Other than that, there are really no downsides. Yes, Oracle has to do a minute amount of work to verify the foreign key during DML, but it will be far more efficient for Oracle to do this than for your application to do it.
Justin

ADF-Master detail-Foreign key generated By Trigger won't propaget to Detail

Hi All,
We have Master-Detail Table where Master table key is generated by DB.
And this key act as Foreign key in detail table.When we Creates Master Table records and commit it .It gets saved correctly But when we navigate to Create Detail record (Cretae button is taken from Detail) It opens in Create mode but does n't poppulate Foreign Key.
Can anybody plz explain..
Regards
Yogesh

Hi Frank,
Thanks for your reply.I don't know "the ADF Business Components tester "
what is this ?
I was able to solve my problem by making "Refresh after insert " Check box selected in Entity object.Now it is generating Master Key and also i am getting it in Detail.
But now problem is, Can we make details record in insert mode by 'Create opration' under Master View.My requirment is insert two records in detail table in background while inserting record in master.Where relationship is maintained by foreign key which generated by trigger.
I want master and detail create form on same page where i will make details from Rendering False i.e both should be in Create mode (Accesser should not retrive record).
In Short
ADF-BC Master Detail - Detail Record insert in Back ground on the same page
Thanks in Adv
RHY

Foreign key validation while creating master/detail record in document mode

I am creating master/detail records in the document mode. And I am generating the master primary key in the create() method of the master Entity Object. Now I valdate the foreign key in the detail Entity Object's validateEntity() method by doing a query to the master table through some View Object.
But since the master record has not yet been posted (since it hasn't been committed) to the database, this query does not return any record and the validation fails in detail object.
And thus the create fails.
Please let me know if this is the right approach for doing this. If so where I am going wrong? Else please let me know if there are any better approach to do this.
Kunal

Kunal:
Use a code snippet like the following:
--- Assuming you're in the detail EO's create method ---
oracle.jbo.server.EntityDefImpl eDef = oracle.jbo.server.EntityDefImpl.findDefObject(<package-qualified-name-of-the-master-Entity-Object>);
oracle.jbo.Row masterRow = eDef.findByPrimaryKey(this.getDBTransaction(), <foreign-key>);
If the row does not exist, masterRow will be null.
findByPrimaryKey first checks the entity cache (which will include your new master row(s)) and then go out to database (if it's not in cache).
Thanks.
Sung

Master-Detail Forms (Populating a Foreign Key Automatically)

Master-Detail Form
When inserting a MD Form, the Master ID (e.g. Deptno,the Primary Key) is generated.
How is it possible for this also to be generated in the Detail Form (as the Foreign Key)? The requirement is for the foreign key to be populated automatically.
Any help would be much appreciated.
Thanks.

This item is discussed earlier in this group.
It's solved in version 3.0.8
Regards,
Anna

Is it possible to display records without master detail relationship?

Hi all,
I've a form for importing excl to oracle with column mapping. i.e I've display excl column heading on the form.
In front of each excel column heading I've provide a list item which contains table column heading so user can map his excl column with table column and according to data gets insert into the database table.
There are 28 excel and table column headings on the form every time user will have to map the column. Its very time consuming job. That's why I've decide to provide template to user. e.g user maps the excl column with table column only first time, then this combination is saved as 'template 1' . when user runs the form next time he/she needs to just select template-1 from lov. and that template get displayed on the forms field. Then user will press the process button and data gets inserted into respective table
Now I've created two tables
1. mst_template
template_name        varchar2(100) ---primary key.
2. template
template_name   varchar2(100) --- foreign key (ref. tempalte_name - mst_template)
ex_col                varchar2(100)
tb_col                varchar2(100)Now my problem is, I try the master detail relationship but it doen't works becase on my form the condition is
excel col                                   table col
excl_col1                                 Tab_col1
excl_col2                                  tab_col2
excl_col28                                Tab_col28       i've establish the master detail relationship but getting error
FRM-40505:ORACLE error:unable to perform query. as i use excl_col1, tab_col1.. etc
can i achieve it by using cursor? without using master detail relationship. My 90% coding is done. only thing remaining is to display records on form. so can i use cursor in this situation? and how? I've work so hard on it and lot of time is spend too so i don't want to change the coding of the existing form. any suggestion for this problem.
please help
Regards
sam.

Turning on Closed Captioning is all you can do. I think the problem you have is that not all movies have closed captioning.

PRIMARY KEY(MASTER)를 REFERENCE하는 FOREIGN KEY 찾는 SQL

제품 : ORACLE SERVER
작성날짜 : 2004-03-12
PRIMARY KEY(MASTER)를 REFERENCE하는 FOREIGN KEY 찾는 SQL
========================================================
$sqlplus sys/manager(SYS user 로 login 함)
sql> select c.name constraint_name
from dba_objects a,
cdef$ b,
con$ c
where a.object_name = 'TABLE_NAME'
and a.object_id = b.robj#
and b.con# = c.con#
/

Hello again,
May be I was not clear enough.
Scenario 1: We use the master-detail form as is with the default oolbar. In this case, the user can insert the detail records one by one without needing the primary-foreign key value since this is handled by default.
Once we save the form (commit_form), I use the pre-insert trigger to get the master block primary key generated from the sequence and since the detail block key is copied from this value, both are saved correctly and it is the end of the story.
Scenario 2: As explained in the initial post, the user will populate the detail records one by one by clicking on the -INSERT DETAIL- button and hence has a window where he can insert the detail info and then be brought back to the master-detail form every time he enters a new detail record.
The problem here is that I can't generate the primary key for the master block since the client has the following requirement:
The user can always change his mind and not complete, meaning save the form, his process
As such, the key should be generated in the last step before Commit.

Master detail without foreign key

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