Data Workshop; identifing Foreign keys

Good morning ~
I am having some difficulty loading tables from Excel, utilizing the Data Workshop. The tables and data do load, however, it is not giving me an opportunity to identify foreign key relationships in tables which already exist. It is allowing Primary keys and sequences to be identified, but I am not being given the opportunity to identify foreign key relationships. From past experience, I remember always being given the opportunity to identify foreign key relationships, and I am confused as to why I am not being given that option now.
Any and all help would be greatly appreciated!
All the best,
-Robert

I don't seem to get it right,
I have three tables, like in the figure in my initial post.
In table CHILD_A I create a foreign key (with check required) linked to the field ID in the table MAIN.
When I add a new record to the table MAIN, I get the error message that I defined in the foreign key.
What I expected was this error to occur when I added a field to table CHILD_A that didn't have a corresponding record in table MAIN.

Similar Messages

Foreign key Mapping based on Data - in SQL Developer Data modeler

Team
Do SQL Developer Data modeler supports Foreign Key mapping based on the Data in the Schema rather defined at the DDL ? For e.g if we implement a Objects Relation ship mapping in Data base, we don't define Foreign keys at table creation.
Toad does this feature through "AUTOMATIC FOREIGN KEYS MAPPING IN TOAD DATA MODELER" more info at (http://toadworld.com/Blogs/tabid/67/EntryId/905/Automatic-Foreign-Keys-Mapping-in-Toad-Data-Modeler.aspx)
any one know how to implement through some scripts also helps me
Regards
Raj

If you have table PKs defined and the candidate columns match those PK columns, then you can use the Discover Foreign Keys utility. Right mouse over the relational model name (node) in the left browser. It is about half way down the menu. I did a blog post about it last week on kentgraziano.com.

Traversing data along foreign keys?

Hi,
I am just wondering whether the following scenario is possible.
I have three tables A, B and C, The relationship between them is:
A ----> C ( many-to-one )
B ----> C ( many-to-one )
Now user updates the table C and I know I can capture what has changed by oracle triggers. Now I need to find the corresponding record in the parent table ( either A or B). Is it possible to somehow traverse the data along the foreign keys and when a record in table C is modified figure out whether the corresponding row and its columns/values belong in table A or table B.
Could this be done and where should I refer for more information about this use case.
Thanks

Your scenario is not clear.
You say A--->C (many to one, which I would understand as many A to one C) but then say that either A or B is the parent in which case an ER model would show an arc:
C >--|------- A
C >--|------- B
ie C has foreign key columns A_ID and B_ID, and a check constraint to allow only A_ID or B_ID to be set, but not both.
Back to the trigger question; while updating C of course you can read data from A and B; is that what you are trying to do, or are you trying to insert a parent A or B if required?
Regards Nigel
null

Primary key foreign key remove problem

hi expretrs,
I create 5 tables in ddic.
1. zpr_cmp Company Master
2. zpr_dpt Department Master
3. zpr_dsg Designation Master
4. zpr_emp Employee master.
5. zpr_slm Salary Master.
Foreign key reference in zpr_emp from table 1,2 and 3 created and
table zpr_emp has
cmpcd, Company Code
empcd, Employee Code
dptcd , Department Code
dsgcd Designation Code
as key fields.
I have upload data and create module pool and reports.
My problem that hr person say that we want to change deptcd/dsgcd of employee (zpr_emp) and
dptcd and dsgcd is as key fields in zpr_emp when i change the table zpr_emp and remove
two key fields dptcd/dsgcd and active error display.
I also try with se14 (Activate and Adjust database) but error still.
how can i remove key field from zpr_emp and active table without loss data and without any change of
module pool/reports
pl. help

Diagnosis
ZPR_EMP table is defined as a check table. For reasons of consistency, changes to the primary key of the table are not allowed.
Procedure
If it is essential that you change the primary key, you must delete the relevant foreign keys. Refer to the where-used list to find all tables containing a field that is checked against this table. Delete the foreign keys for these fields.
If necessary, maintain the deleted foreign keys again.
Value table - It's a field in a domain it helps in domain level data validation.
Check table - unlike value table it helps in feild level data validation.
The relational data model contains not only tables, but also relationships between tables. These relationships are defined in the ABAP/4 Dictionary by foreign keys. An important function of foreign keys is to support data integrity in the relational data model. Foreign key fields may assume only those values allowed by the check table, in other words, values occurring in the primary key of the check table.
A foreign key provides a link between two tables, for eg.,T1 and T2 by including a reference in table T1 to the primary key of table T2. For this purpose, Foreign key fields assigned to the primary key fields of T2 are included in T1. Table T1, which is the one being checked, is called a foreign key table, and table T2 is called a check table. The terms dependent (foreign key) table and referenced (check) table are also used.
VALUE TABLE:If the domain of the check field has a value table, this is proposed by the system as check table in the foreign field maintenance. The key fields of the value table are in this case assigned fields of the foreign key table with the same domain. These fields may assume only those values allowed by the value table.
The value range of the domain can be defined by specifying value table.All table fields referring to this domain can then be checked against the corresponding field of this value table.In order the check can be executed, a foreign key must be defined for the value table.

Drop partition without disabling foreign key

Hi All,
I have parent and child table.
Parent table
create table parent_1
(id number,
create_date date,
constraint parent_1_pk001 PRIMARY KEY (id))
PARTITION BY RANGE (create_date)
INTERVAL (NUMTODSINTERVAL(1,'DAY'))
(PARTITION parent_1_part VALUES LESS THAN ('01-JAN-2010'));
Child Table
create table child_1
(id number,
create_date date,
constraint child_1_fk001 FOREIGN KEY (id)
REFERENCES parent_1 (id))
PARTITION BY RANGE (create_date)
INTERVAL (NUMTODSINTERVAL(1,'DAY'))
(PARTITION create_date_part VALUES LESS THAN ('01-JAN-2010'));
I am having problems dropping partition.
Parent_1
1     26-JUL-12
2     26-JUL-12
Child_1
1     26-JUL-12
alter table CHILD_1 drop partition SYS_P274;
table CHILD_1 altered.
ON DROPPING PARENT PARTITION
alter table parent_1 drop partition SYS_P273;
Error report:
SQL Error: ORA-02266: unique/primary keys in table referenced by enabled foreign keys
02266. 00000 - "unique/primary keys in table referenced by enabled foreign keys"
*Cause:    An attempt was made to truncate a table with unique or
primary keys referenced by foreign keys enabled in another table.
Other operations not allowed are dropping/truncating a partition of a
partitioned table or an ALTER TABLE EXCHANGE PARTITION.
*Action:   Before performing the above operations the table, disable the
foreign key constraints in other tables. You can see what
constraints are referencing a table by issuing the following
command:
SELECT * FROM USER_CONSTRAINTS WHERE TABLE_NAME = "tabnam";
PLEASE CAN I KNOW IF THERE IS ANY WAY TO DROP PARENT PARTITION WITHOUT DISABLE/ENABLE FOREIGN CONSTRAINTS
Thanks

SQL Error: ORA-02266: unique/primary keys in table referenced by enabled foreign keys
02266. 00000 - "unique/primary keys in table referenced by enabled foreign keys"
*Cause: An attempt was made to truncate a table with unique or
primary keys referenced by foreign keys enabled in another table.
Other operations not allowed are dropping/truncating a partition of a
partitioned table or an ALTER TABLE EXCHANGE PARTITION.
*Action: Before performing the above operations the table, disable the
foreign key constraints in other tables. You can't do that until you disable the foreign key constraint
http://jonathanlewis.wordpress.com/2006/12/10/drop-parent-partition/
Hope this helps
Mohamed Houri
www.hourim.wordpress.com

Foreign keys

I have a summary table that was created off a fact table. The summary table has similar fields as the fact table, including keys that link back to dimension tables. My question is, should there be foreign key constraints defined on the summary table, since the data is coming from a fact table that already validated the data with the foreign keys defined on it (fact)?
create table fact1
(factkey number,
,amount number(21,6)
,state_id number,
foreign key to state_dim table on fact1
Create table summ1
(total number
,state_id number
populate summ1 from fact1
foreign key to state_dim table on summ1 ---- is this redundant?

select table_name from user_indexes where index_name = (select
r_constraint_name from user_contraints where constraint_type
= 'R' and table_name = <child_table>)
I think that should do it.

Constraint Problem in Foreign key --- Very Urgent - Help Needed

Hello All,
There are 2 tables and their associated fields
EmpProj
Emp_id(pk)
Proj_id (pk)
eff_from_dt(pk)
ProjDesc
Proj_id(fk)
eff_from_dt(fk)
Proj_name
I have created the 2 tables like shown below
CREATE TABLE EMPPROJ
(EMP_ID NUMBER,
PROJ_ID NUMBER,
eff_from_dte date,
PRIMARY KEY(EMP_ID,PROJ_ID,EFF_FROM_DT)
CREATE TABLE PROJDESC
(PROJ_ID NUMBER,
PROJ_NAME VRACHAR2(20),
EFF_FROM_DT DATE,
CONSTRAINT S2 FOREIGN KEY(PROJ_ID,EFF_FROM_DT) REFERENCES EMPPROJ(PROJ_ID,EFF_FROM_DT));
Now whenever i try to create a foriegn key table it gives an error message like "No matching parent key found."
The columns in the foreign key should be same in number, same datatype and size. you can't create a foreign key with one column for a primary key of two columns.
What i need to do to refer only the two columns in the Primary Key by a Foreign key?
Please suggest anyway to resolve this problem.
Thanks in advance.
Captain

My question is
The foreign key can not refer only partial column of primary key as the rule of RDMS.
How should i achieve that by other alternatives?
Please suggest any method.
Thanks in advance.

Problem creating table with foreign key in SQL Workshop

Application Express version 2.2.1.00.04
Get error message "Number of referencing columns/data types must match referenced columns"
Master table SLS_SUPPLIERS has primary key SLS_ID NUMBER(8,0) and when creating table SLS_PRODUCTS with FK SLS_SLP_ID NUMBER(8,0) using the create table wizard I get the above error.
The name of the FK is SLP_SLS_FK, key column is SLP_SLS_ID, referenced table is SLS_SUPPLIERS and referenced column is SLS_ID.
Any help is much appreciated.
James Edey
I should add that if I create the table without the foreign key constraint and then create the constraint separately in SQL Workshop then it creates OK. It only fails in the create table wizard dialog.
Message was edited by:
edeyje
Obviously no-one interested in this - just thought it may be a bug in v2.2 that the development team would find useful.
James
Message was edited by:
edeyje

I replied to the other thread on this too -
there is a bug on that page when you click Next. If you define more than one fk but then navigate using the links on the process chart on the left (Constraints, Confirm, etc), the page works fine. We do have a bug on this now and I just added the notes I will need to get this fixed in 3.1 (I have already assigned it to me - must have some rogue validation that fires on next).
Sorry it took so long for this to get noticed - I am glad I checked the forum this morning -
-- Sharon

How to get multiple row data in single row for one value of foreign key

i want to get data from a table in a way that all the emp_id corresponding to one manager_id
in employee table come in one row. (emp_id is the primary key and manager_id is the foreign key) Since there are different emp_id whose manager_id is same
so how can i get all the emp_id in one row .

One way with 10g:
select mgr,
       rtrim(xmlagg(xmlelement(empno,empno||',').extract('//text()')),',') emps
from emp
where mgr is not null
group by mgr;10g:
-- define this function:
create or replace
function concatenate(c Sys_refcursor, sep varchar2 default null) return varchar2
as
val varchar2(100);
return_value varchar2(4000);
begin
-- open c;
loop
fetch c into val;
exit when c%notfound;
if return_value is null then
    return_value:=val;
else
    return_value:=return_value||sep||val;
end if;
end loop;
return return_value;
end;
select mgr,
       concatenate(cursor(select empno from emp e where e.mgr=emp.mgr order by empno),',')
from emp
where mgr is not null
group by mgr;With 11g:
select mgr,
       listagg(empno,',') within group (order by empno) emps
from emp
where mgr is not null
group by mgr;

Transfer data from one database to another without identities but keep the relation b/w PK and Foreign key

Hi,
I need to transfer data from one database to another database (both are identical databases).
1. Not transferring identity columns (primary keys). the destination table might have the same key.
2. keep the PK's and FK's relation b/w parent and child table
3. I have 4 levels
Example: tableA (col1 int identity(1,1) , col2, col3)
tableB (col1 int identity(1,1) ,
col2 , col3) -- col2 has the foreign key relation with tableA.col1
tableC (col1 int identity(1,1) ,
col2, col3) -- col2 has the foreign key relation with tableB.col1
tableD (col1 int identity(1,1) , col2, col3) -- col2 has the foreign key relation with tableC.col1
please advise me.
Thanks in advance

Try the below:
/********************************SAMPLE TARGET***************************************************************/
Use MSDNSamples
create table TableA(LevelValueId int identity(1,1) primary key, name varchar(100))
Insert into TableA(name) Select 'R1'
Insert into TableA(name) Select 'R2'
create Table TableB(ChildId int identity(100,1),name varchar(100), LevelValueID int references TableA(LevelValueId))
Insert into TableB(name,LevelValueID) Select 'Childname1',1
/********************************SAMPLE TARGET***************************************************************/
/********************************SAMPLE SOURCE***************************************************************/
Use Sample
create table TableA(LevelValueId int identity(1,1) primary key, name varchar(100))
Insert into TableA(name) Select 'C1'
Insert into TableA(name) Select 'C2'
create Table TableB(ChildId int identity(100,1),name varchar(100), LevelValueID int references TableA(LevelValueId))
Insert into TableB(name,LevelValueID) Select 'Kidname1',1
/********************************SAMPLE SOURCE***************************************************************/
USe MSDNSamples
/********************************MIGRATION INTERMEDIATE TABLE***************************************************************/
--Migration table
Create table Mg_TableA(LevelValueId int, NewValueId int)
/********************************MIGRATION INTERMEDIATE TABLE***************************************************************/
/********************************ACTUAL MIGRATION FOR MASTER TABLE***************************************************************/
MERGE INTO TableA
USING sample.dbo.TableA AS tv
ON 1 = 0
WHEN NOT MATCHED THEN
INSERT(name) Values(tv.name)
Output tv.levelValueId ,inserted.LevelValueid INTO
Mg_TableA;
/********************************ACTUAL MIGRATION FOR MASTER TABLE***************************************************************/
/********************************ACTUAL MIGRATION FOR CHILD TABLE***************************************************************/
Insert into TableB (name,LevelValueID)
Select A.name,B.NewValueId From sample.dbo.TableB A
Inner join Mg_TableA B on A.LevelValueID = B.LevelValueId
/********************************ACTUAL MIGRATION FOR CHILD TABLE***************************************************************/
/********************************TEST THE VALUES***************************************************************/
Select * From TableA
Select * From Mg_TableA
Select * From TableB
/********************************TEST THE VALUES***************************************************************/
Drop table TableB,Tablea,Mg_TableA
Use Sample
Drop Table TableB,Tablea

In ADF how can i insert data in multiple table if they have foreign key

I have started working on ADF and can anybody inform me in ADF how can i insert data in multiple table if they have foreign key,please?
Thnak you very much.

Hello,
Still no luck.I am surely doing silly mistakes.Anyway,Here are my workings-
1> student_mst (id(pk),studentname) and student_guard_mst(id(fk),guardianname)
2> created EO from both of the tables,made id in both EO as DBSequence and an association was also generated.
3> i made that association composite by clicking the checkbox
4> i created 2 VO from 2 EO.
5> put those VO in Application Module.
6> dragged and dropped 2 VO on my jspx page and dropped them as ADF Form.
Now what to do please?

SQL Developer Data Modeler - Relation to Foreign Key Generation

SQL Developer Data Modeler 2.0.0 Build 584.
I am having trouble with Relations to Foreign Keys when Forward Engineering a Relational Model from a Logical Model.
First of all, the Naming Standard is not applied to the Foreign Keys when I perform the Engineer to Relational Model.
So I right click on the Relational Model from the Browser and Apply Naming Standards to Keys and Constraints.
I uncheck everything but Foreign Keys.
Now, Foreign Keys are named according to my Naming Standards.
However, this process also performs renames on the Column Foreign Keys even though I specifically unchecked that option.
This appears to be a BUG in the software and I haven't found a way around it.
I tried using {column} instead of {ref column} in the Naming Standard Template for Column Foreign Key, but that simply resulted in renaming my columns to "{column}".
Please confirm and/or let me know of any work-around for this.
Thanks,
Dan

Hi Philip,
Thanks for the reply.
Is this recorded as a bug to be addressed in the future?
Should I submit this problem via Oracle Support?
The other work-around I came up with is to override every Relation name in the Logical Model with the name I want to use in the Relational Model.
When the Relational Model is Engineered, this becomes my Foreign Key name.
Of course, this is not how I want to do things, so I am hoping for a bug fix someday.
Regards,
Dan

Mapping error at deployment with foreign key data rule

I have created data rules for enabling foreign key constraints. There are 4 foreign key constraints on the fact table.
For the 1st foreign key ... its a single key match key1 on table 1
For the others, its a composite key .. key1 and key2 on table 2
key1 and key3 on table 3
key1 and key4 on table 4
When I implement with the single key foreign key constraint the mapping works fine. But when I apply the other foreign key data rules for composite keys, I get the following message while deploying ....
M_CNT Create Warning ORA-06550: line 209, column 3:
PL/SQL: ORA-00909: invalid number of arguments
M_CNT Create Warning ORA-06550: line 520, column 65530:
PL/SQL: SQL Statement ignored
M_CNT Create Warning ORA-06550: line 56, column 65530:
PL/SQL: SQL Statement ignored
M_CNT Create Warning ORA-06550: line 673, column 3:
PL/SQL: ORA-00909: invalid number of arguments
The data rule setup done is type Referential
Specify the number of attributes in row relationship - 2
Specify the referencing cardinality of row relationship
Minimum Count 1 Maximum Count n
Specify the referenced cardinality of row relationship
Minimum Count 1 Maximum Count n
What is it that I am doing wrong ?
Any suggestions. Help !!!!
Regards,
AW

Hi AW,
How can I overcome this situation ?The best solution as suggested by Jörg is use of surrogate keys.
For every production key (composite or single) generate a corresponding surrogate key using sequence operator in staging area.
This will not just solve your problem but it will be faster also (the joins will be faster with system-generated sequence numbers),
In a data warehouse use of production keys as primary key for linking with (foreign key) is not recommended, keep the production keys as additional attributes.
Regards,

SQL data modeller -- how to create 1 to 1 relationship foreign key ?

hi guys...
i got 2 tables..
table 1 - CFR
CFR_ID = primary key
table 2 - USER_PLAN
USER_ID = primary key
PLAN_ID,
CFR_ID = foreign key reference (table 1)
The business flows go like this..
insdie CFR table, it contain all records / transactions of a particular user/plan. everytime a new transaction occurs for a plan/user, a new CFR_ID / row will be generated.
after which, the newly generated CFR_ID for the new row , will be updated to the CFR_ID in USER_PLAN
Thus, there is always a 1 to 1 relationship between the 2 table regardless how many CFR_ID is generated for a particular USER_PLAN. as the CFR_ID in the USEr_plan table will always be the latest one generated inside the CFR table.
However, in the data modeller, i am unable to create such foreign key relationship... ANY idea how do i create a 1 on 1 foreign key relationship ? or there is no such way..
Thanks and Best Regards,
Noob

Hi philips,
Thanks for the wonderful reply..
Just to double comfirm with you,
even if i had set a unique constraint on CFR_ID(foreign key column), inside the relationship model, the relationship between the foreign key is still showing as a 1:m relationship right ?
just that a character 'U' will appear beside the CFR_ID column.
However the diagraphm is still showing a 1:M relationship.
is this correct ?
Regards,
Noob

SQL Developer Data Modeler not drawing foreign key relationships

I'm having trouble with SQL Developer Data Modeler when I importa a DDL that has foreign keys. I export DDL files from SQL developer and choose various subsets of files. Sometimes Data Modeler will not recognize a foreign key if I include say a dozen files in the DDL file, but it will if I include just a few. Worse, even if the foreign key is recognized, sometimes it is not drawn in the Data Modeler and I have no way to make it be drawn. To be specific, I import a file containing the DDL for just two tables -- I see the foreign key! I import a file containing the DDL for a dozen tables including the two, I don't! Is there something I am not understanding about when Data Modeler will draw foreign keys or is the tool simply quite buggy?
Much thanks!
-ttamon

Hi Philip,
I believe I have isolated the problem. Apparently if a field is named "FOREIGN..." it interferes with the tool recognizing foreign keys. Try to import a DDL file containing the following text:
CREATE TABLE "SAMPLE"."SAMPLE_ONE"
(     "ID" VARCHAR2(255 CHAR) NOT NULL ENABLE,
     "VALUE" VARCHAR2(255 CHAR),
     PRIMARY KEY ("ID")
TABLESPACE "SAMPLE_DATA" ;
CREATE TABLE "SAMPLE"."SAMPLE_TWO"
(     "ID" VARCHAR2(255 CHAR) NOT NULL ENABLE,
     "FOREIGN_NAME" VARCHAR2(255 CHAR),
     PRIMARY KEY ("ID")
TABLESPACE "SAMPLE_DATA" ;
CREATE TABLE "SAMPLE"."SAMPLE_THREE"
(     "ID" VARCHAR2(255 CHAR) NOT NULL ENABLE,
     "VALUE" VARCHAR2(255 CHAR) NOT NULL ENABLE,
     "ALT_ID" VARCHAR2(255 CHAR),
     PRIMARY KEY ("ID")
TABLESPACE "SAMPLE_DATA" ENABLE,
     CONSTRAINT "FK6DF8294F2288190D" FOREIGN KEY ("ALT_ID")
     REFERENCES "SAMPLE"."SAMPLE_ONE" ("ID") ENABLE
TABLESPACE "SAMPLE_DATA" ;
You will discover the foreign key is not recognized or drawn! Now, if you swap the location of the third table (put it up first) everything works fine. This is how I discovered the problem, various subsets would work, others would not. To confirm the problem is with the field named "FOREIGN_NAME" use the DDL as specified above but change the first letter in the word "FOREIGN" to something else, and it will recognize the foreign key. Looks like a bug to me (took me about 4 hours to isolate this!). I am using Oracle SQL Developer Data Modeler version 2.0.0 Build 584.
-ttamon

Data Workshop; identifing Foreign keys

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