Find foreign key details

Hi,
i want to have the details like reference tablename,reference volumn name of foreign key for a particular table.
SELECT a.column_name,
        c_pk.table_name r_table_name, c_pk.constraint_name r_pk
FROM all_cons_columns a
JOIN all_constraints c ON a.owner = c.owner
                        AND a.constraint_name = c.constraint_name
JOIN all_constraints c_pk ON c.r_owner = c_pk.owner
                           AND c.r_constraint_name = c_pk.constraint_name
WHERE c.constraint_type = 'R'
   AND a.table_name = :TableNameUsing this query I am getting everything except the reference column name.
Can somebody please help?
Thanx

You need to add another join to ALL_CONS_COLUMNS:
SELECT a.column_name,
        c_pk.table_name r_table_name, c_pk.constraint_name r_pk,
        c_pk_c.column_name
FROM all_cons_columns a
JOIN all_constraints c ON a.owner = c.owner
                        AND a.constraint_name = c.constraint_name
JOIN all_constraints c_pk ON c.r_owner = c_pk.owner
                           AND c.r_constraint_name = c_pk.constraint_name
JOIN all_cons_columns c_pk_c ON c_pk_c.owner = c_pk.owner
                              AND c_pk_c.constraint_name = c_pk.constraint_name
WHERE c.constraint_type = 'R'
   AND a.table_name = :TableName

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How to find foreign key in pl/sql

Error starting at line 1 in command:
DELETE FROM ZKET_SOLE WHERE IID_SOLA = 1
Error report:
SQL Error: ORA-02292: integrity constraint (IRCKIS.ZKETSTIP_ZKET_FK) violated - child record found
02292. 00000 - "integrity constraint (%s.%s) violated - child record found"
*Cause: attempted to delete a parent key value that had a foreign
dependency.
*Action: delete dependencies first then parent or disable constraint.
i need to find foreign key but i do not know how. I know that it must be in dictionary but i can not find it. I do not have access to ER model.
Thx

You could use a query similar to this:
SELECT ucc.constraint_name,ucc.table_name,ucc.column_name
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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
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See the javadocs for DatabaseMetaData class under java.sql

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Same as the topic ~ how can I find all the able/unable foreign key/contraints inside a database ? Using TSQL

Hello,
Please try the scripts provided on the following resources:
http://blog.sqlauthority.com/2009/07/17/sql-server-two-methods-to-retrieve-list-of-primary-keys-and-foreign-keys-of-database/
http://blog.sqlauthority.com/2006/11/01/sql-server-query-to-display-foreign-key-relationships-and-name-of-the-constraint-for-each-table-in-database/
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hi,
anyone got sql that would tell which tables reference a primary key in a another table e.g. the link from primary key to foreign key in a schema?
thanks

query DBA_CONSTRAINTS
SQL> desc dba_constraints
Name                            Null?    Type
OWNER                            NOT NULL VARCHAR2(30)
CONSTRAINT_NAME                  NOT NULL VARCHAR2(30)
CONSTRAINT_TYPE                        VARCHAR2(1)
TABLE_NAME                       NOT NULL VARCHAR2(30)
SEARCH_CONDITION                        LONG
R_OWNER                             VARCHAR2(30)
R_CONSTRAINT_NAME                        VARCHAR2(30)
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STATUS                              VARCHAR2(8)
DEFERRABLE                             VARCHAR2(14)
DEFERRED                             VARCHAR2(9)
VALIDATED                             VARCHAR2(13)
GENERATED                             VARCHAR2(14)
BAD                                  VARCHAR2(3)
RELY                                  VARCHAR2(4)
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Finding foreign keys of a child table,grandchild and all dependendents

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Thanks visakh it gave me an idea and this script helped me
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if OBJECT_ID('tempdb..#OrderList','U') is not null
DROP TABLE #OrderList
CREATE TABLE #TEMP
OrderNo INT,
TableName VARCHAR(50)
CREATE TABLE #OrderList
RecordNo INT,
OrderNo INT,
TableName VARCHAR(50)
INSERT INTO #TEMP
VALUES ( @Order,
@mytable )
WHILE ( EXISTS(SELECT TableName
FROM #TEMP
WHERE OrderNo = @Order) )
BEGIN
SET @Order= @Order + 1;
INSERT INTO #TEMP
SELECT @Order,
t1.TABLE_NAME AS PointsFrom
FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS r
JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS t1
ON t1.CONSTRAINT_NAME = r.CONSTRAINT_NAME
JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS t2
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SELECT Row_number() OVER (ORDER BY OrderNo, TableName),
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#TEMP.TableName
FROM #TEMP
DROP TABLE #TEMP
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SET @Count = (SELECT Max(RecordNo)
FROM #OrderList)
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select @tblname = TableName FROM #OrderList WHERE RecordNo = @Count
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Foreign Key Relationships to external associations - Is it really this dodgy or is there a better way?

Hi All,
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<Remaining code not shown>
e.g. I have to assume CompanyCode is actually "Position Id" when the source of this call is from Position (I could also look at the navigation to find this has come from Position but if you're wondering, unfortunately for external associations, the key is not included in this for some reason but the same followup logic of reloading the object would be required).
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Thanks,
Matt
Edit since posting and playing around a bit more: Thinking about this further - it's unfortunate, but the navigation property in odata really implies the dependent entity has knowledge of the principal entity and realistically must know how to instantiate it if it needs to get data based on one of the properties.
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I feel your pain
Ron.

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Hi All,
We have Master-Detail Table where Master table key is generated by DB.
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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.
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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.
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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>);
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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.
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This item is discussed earlier in this group.
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Regards,
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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)?
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This should work without dependency on the database having the relation defined.
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1) You can try the following query:
select r.owner, r.table_name
from user_constraints r, user_constraints o
where r.r_owner = o.owner and r.r_constraint_name = o.constraint_name
and o.constraint_type in ('P','U') and r.constraint_type = 'R'
and o.table_name = 'DEPT'
2) To drop tables with references you can also use drop table cascade constraints,
which will also drop constraints from tables:
[email protected]> drop table dept;
drop table dept
ERROR at line 1:
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Table dropped.
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Best Regards
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How can I have multiple instances of a column that itself holds a foreign key reference?

I am new to Visual Studio so to start learning it I first of all downloaded a sample available at https://code.msdn.microsoft.com/ADPNET-Entity-Framework-2d1160cb and started working around it. Since I have fairly good knowledge of VB6 and SQL it did
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If you look at the sample referred above you would not find how to deal with such a case. When I follow the pattern of the sample I get host of design time and runtime errors.
Therefore, please suggest what strategy should be adopted in a scenario described above while developing WPF application using Entity Framework and MVVM.

I am new to Visual Studio so to start learning it I first of all downloaded a sample available at https://code.msdn.microsoft.com/ADPNET-Entity-Framework-2d1160cb and started working around it. Since I have fairly good knowledge of VB6 and SQL it did not
take much time for me to understand the whole pattern the sample is based on. Had Microsoft given a detail explanation or a walk through of the sample it would have been much easier to understand the basics. However, I somehow managed to work around it and
have build a small desktop application in wpf using Entity Framework and MVVM. But a point has come where I have got completely stuck up finding no way out. The problem is as under:
I have two tables. 1 Advocate and 2 Party. Table Advocate would contain names of advocates and would have a primary key. Similarly Party would have names and their respective primary keys.
Then I have another two tables 1. Case and 2 CaseDetail. Table Case would simply hold three columns: 1. CaseId 2. CaseNo and 3. Year. Table CaseDetail would have CaseDetailId as a primary key the CaseId as a Foreign Key. Now what I need is that a particular
case could have multiple advocates and multiple petitioners. So the table CaseDetail would have two columns to hold advocateId and PartyId as a Foreign Keys.
If you look at the sample referred above you would not find how to deal with such a case. When I follow the pattern of the sample I get host of design time and runtime errors.
Therefore, please suggest what strategy should be adopted in a scenario described above while developing WPF application using Entity Framework and MVVM.

How to change a massive amount of foreign keys?

Hi to all!
I'm a newbie here, and I hope I'll find a solution to my problem...
Well, I have to create a copy of row within the same table, with same values except of primary key. That part is ok. Then, I have to change values of that primary key (from old value, to new value) in all foreign keys which references to that column/primary key in parent table. Let's say that isn't problem too, using system tables and informations about constraints and indexes...
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return number is
l_new_order_id orders.order_id%type;
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Can I create a foreign key when creating Business Components from Tables

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View object instances show up in the data control palette once you've added them to your application module's data model.
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http://www.oracle.com/technology/products/adf/learnadf.html
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Find foreign key details

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