foreign key constraint

Similar Questions

• SQL statement error INSERT The conflicted with the FOREIGN KEY constraint

  I recently installed a reporting for vmware vsphere software, but I get a SQL error. I opened a request for assistance with vmware, but so far they have not come up with a solution. The error is caused by: com.microsoft.sqlserver.jdbc.SQLServerException: instruction INSERT The conflicted with the FOREIGN KEY constraint 'FK_CB_VSM_NETWORK_VC_ID '. The conflict occurred in database 'VCChargebackVCC02', table "dbo." " CB_VSM_SERVER', column 'VC_ID '. I don't know a lot about SQL, so I'm lost in the extent of troubleshooting is concerned. If anyone has any ideas I'd love to hear them.

  SQL questions are better posed on Technet.  They are better equipped to manage the

  http://social.technet.Microsoft.com/forums/en-us/categories/

• Foreign key constraint, not recognized during the synchronization of data with the model dictionary

  Hello

  Data Modeler is a foreign key constraints do not recognize when synchronizing data with the model dictionary, although the foreign key is there (in the database that a data dictionary is read). I can't find any criterion when a foreign key is not recognized by the Data Modeler. Are there limits to the length of the attribute, or the number of columns in a foreign key, or other limitations which may lead to this behavior not to recognize a fk by Data Modeler? I have columns more than 32 characters. I compared with the fk is recognized by DM, but I can't find anything that indicates why it is not recognized.

  I wonder if someone also has constraints of foreign keys that are not recognized in the comparison of data bases and model?

  Thank you

  Robert

  Hi Robert,.

  Thanks for the comments, I logged a bug.

  Philippe

• How to associate an index with a foreign key constraint

  I understand how to associate a primary key constraint or a Unique key constraint index...
  Yet I don't see how to associate the index of a foreign key constraint. Is this possible?
  
  Thank you
  Bob Larsen

  Hi Bob,

  In Data Modeler, physical model for Oracle primary and unique keys dialog boxes offer an Index field using, which is used to generate the 'using_index_clause' in the DDL for primary and Unique key constraints.
  However the Oracle Database DDL does not have the "using_index_clause" for Foreign Key constraints, thus Data Modeler does not provide this feature for foreign keys.

  So, you will need to create a separate Index that uses the same columns as the foreign key (using the index page of the table properties dialog box in the relational model).

  David

• in the setup of freshclient and datadownload foreign key constraint

  Hello
  
  I use oracle database 10 GB lite R3 and oracle database 10g R2 as the database back end for her. When I do the client installation fees and datadownload of the client machine I don't get the foreign key constraint in the machune of customer. can someone explain to me the reason for this?
  
  Published by: 793097 on November 9, 2010 21:57

  The Mobile Server deploy foreign keys out of the box. You will need to add them through scripting. You can add scripts in the MDW or API.

  Let me know if you need an example.

• Details of the foreign key constraints

  Why foreign key constraints is not ongoing validation in case of null values?
  For example, in the table EMP and DEPT table, EMP. References DEPTNO Dept. DEPTNO.
  But I am able to insert rows into the EMP table that contains nulls for EMP. DEPTNO.

  Prasath N wrote:
  Why foreign key constraints is not ongoing validation in case of null values?
  For example, in the table EMP and DEPT table, EMP. References DEPTNO Dept. DEPTNO.
  But I am able to insert rows into the EMP table that contains nulls for EMP. DEPTNO.

  I guess he's saying essentially that a foreign key must have a parent key or can be an orphan. But may not be a key that is not listed in the parent.

  And also NULL is neither equal to anything, nor does not correspond to something.

  But still, you can put a NOT NULL constraint if you do not want your foreign key to contain orphaned records.

• Entity Association depends on foreign key constraint?

  Hello
  
  I use JDeveloper 10.1.3.4 and have a question, as shown in the subject of this announcement. By a design flaw, I added a foreign key on a table constraint at the level of the database for any purpose other than to achieve a relationship between master/detail your. Now the foreign key constraint fell to remedy the irregularity, but I don't know if the application is not a problem on the road.
  
  The application in question has a table named BILL and another table called VALIDATIONS, both with the same primary key composite (LDAP_UID, TERM), where we hear per semester.
  
  BILL is on students, the balance they have, etc. VALIDATION records the commitment, students make:
  

  BILL
  ------------------------------------------------
  LDAP_UID       TERM      BALANCE
  -------------  --------  --------
  john.miller    200902       1500
  
  
  VALIDATIONS
  ------------------------------------------------
  LDAP_UID       TERM      CONFIRM_NUMBER
  -------------  --------  --------------
  john.miller    200902    0901100005

  The foreign key constraint has been added on the table of VALIDATION, validations (LDAP_UID, TERM) reference (LDAP_UID, TERM) BILL. When the data model is accumulated in the application, an entity association was created automatically for this foreign key constraint, and then a link has been created on the association of the entity to achieve the effect mater-detail of the application:
  

  Table:               BILL
  Table:               VALIDATIONS
  Foreign Key:         VALIDATIONS(LDAP_UID, TERM) references BILL(LDAP_UID, TERM)
  Entity object:       Bill
  Entity object:       Vallidations
  Entity Association:  ValidationsBillFkAssoc (based on the foreign key)
  View object:         LoggedInStudent (from Bill)
  View object:         OneValidation (from Validations)
  View link:           ValidationByOneStudent (based on ValidationsBillFkAssoc.  This achieves master/detail
                                               between LoggedInStudent and OneValidation)

  This foreign key is now asking problem and should be deleted: Bill table contains the data from more than three semesters, whereas student commitments cumulatively saved in the table of VALIDATIONS must be maintained permanently. When data from older semesters are unloaded from the table of BILL, the lines stored in the table of VALIDATION are orphaned.
  
  I thought that the link of the view and the association of the entity dependent on the foreign key, so I removed before dropping the foreign key in the order listed here:
  

  Removed usage of of the VO (OneValidation) from the application module
  Deleted the view link (ValidationByOneStudent)
  Deleted the entity association (ValidationsBillFkAssoc)
  Dropped the foreign key in the database

  The master/detail relationship between the two your is still necessary. I added the link display, which now is based on common attributes (LdapUid, term) between the two, rather than based on the association of the entity. The modified application works very well with the database has changed and now the rows in the table of VALIDATION will not be an orphan.
  
  What is interesting and also troubling is that when I run a copy of the application which has been registered before these amendments, on the basis of data which dropped the foreign key constraint, the application still works, with the master-detail and everything. And the dependencies do not seem to matter. But isn't it?
  
  My question is: an entity association requires a corresponding foreign key in the database? If I use the copy of the application before the changes, it will be OK or it will cause unforeseen problems on the road?
  
  Thank you!
  
  Newman
  
  Edited by: J. Newman, October 6, 2009 10:31

  Hello

  If you've proven yourself that in fact there is no dependency between the association and the foreign key constraint. in fact you can create everything that (the primary keys, foreign keys, other constraints) only for your same features if you have nothing
  defined in database tables, which is obviously not right approach. and JDeveloper tells you only about the dependence of its use (if you want to delete something that is used some part... e. g VL in AM, EO in VO, VO in AM...)
  just to note - it is important to synchronize your OA if you change the definition of the data table. for example if you remove the foreign key of the table then right-click on EO and chose to sync - JDeveloper should acknowledge and ask you
  If you want to remove this constraint of EO.

  Kind regards

  Branislav

• Is this a BUG?  Export of data besides the foreign key constraints

  I use SQL Developer 1.5.4 with patches installed 59,47 and 59,59. I want to do an export of database from a scheme of 10 g XE and include all objects in the DOF resulting. So I select ALL the checkboxes in the Export Wizard and when I get to step 3 to specify the objects, I don't see any of my constraints in the list box... not foreign key constraints, without constraints of primary key, without check constraints, nothing. Is this a bug, or is there a workaround, or which could possibly hurt? We want to be able to use the database export function to easily transport and track the changes to our entire schema using source control compares.
  
  Any help or suggestions replacement would be apprieciated.
  
  Thank you
  Matt

  Bug 8679318 follows this question

• Create a foreign key constraint against a different schema

  Hi all
  
  I use the oracle 10g r2 on windows 2003 server database.
  
  I have a table in the HRMS as STAFF.
  I have another INVENTORY schema, where I want to access a column as a foreign key in HRMS. STAFF (STAFF_ID).

  connect hrms/hrms@orcl
  grant select on STAFF to INVENTORY;
  connect inventory/inventory@orcl
  alter table inv_details add constraint fk_inv_hr_staff foreign key (staff_id) references HRMS.STAFF(STAFF_ID);
  Error report:
  SQL Error: ORA-00942: table or view does not exist
  00942. 00000 -  "table or view does not exist"

  What exactly I have to grant so this diagram of the INVENTORY will be able to create a referential constraint?
  
  Kind regards.

  You must also grant the privilege of REFERENCES.

  See privileges in table 18-2 at http://docs.oracle.com/cd/E11882_01/server.112/e26088/statements_9013.htm#BGBCIIEG

  Hemant K Collette

• Update fails because of a foreign key constraint

  Hello.
  
  I have several tables in my database but 3 are important. One of them is used (Employee_ID, Last_Name and other irrelevant columns name), dentist (employe_id, Qualifications) and Wizard (Employee_ID, Qualifications).
  I am applying in Oracle Application Express and trying to update a row in the Employee table, I get an ORA-20505: error in DML: p_rowid = 96, p_alt_rowid = employe_id, p_rowid2 =, p_alt_rowid2 is. ORA-02292: integrity constraint (DB. Dentist_CON) violated - book of the foundling
  
  Now, first of all, I had the same problems with the removal of lines, but I've solved that by adding a delete cascade on foreign keys.
  I have key constraints foreign both in my paintings dentist and Assistant in columns Employee_ID and these refer to Employee_ID in the Employee table.
  
  When I update anything in my Express request form, I've allowed users to do anything of my Employee table primary key (employe_id). Any changes that might occur therefore columns unrelated to the primary key. For example, if I change the name of a particular line column I can't update because I get the above error.
  
  I don't understand why this is happening.
  If I could get a glimpse, why this is happening or using any I would be very happy.
  
  Thanks in advance.

  982909 wrote:
  But it is not true. If I'm changing the name of the employee and update this line in employee WITHOUT changing the value of Employee_ID how can I possibly change the daughter line? This is what is confusing in that me and I have no idea on how to solve it.

  the code below shows above is NOT true

  CREATE OR REPLACE TRIGGER "Employee_T1".
  FRONT
  Insert or update on "employee."
  for each line
  Start
  Select employee_sequence.nextval in: double new.employee_id;
  end;
  /

  TRIGGER above changes EMPLOYEE_ID for all training update!

• type a materialized view foreign key constraint?

  Hello.
  
  I have a materialized view that flows into a single column 'A' two different columns of different tables of a remote database.
  
  I also have a table that has a column 'B', whose values must exist in the column 'A' of the materialized view.
  
  So it's like defining a constraint foreign key of a table to a view, but this is not possible.
  
  Is it possible to do?
  
  I saw some triggers that verify the existence of the 'A' value before insertion in 'B', but this fails when a value is changed or deleted in 'A'
  
  Any suggestions?
  
  Thank you very much.
  
  Published by: user7029403 on 18-ene-2013 03:57

  There is no problem of definition of a primary key on a materialized view and then reference it with a foreign key. It works for me:

  create database link l1 connect to scott identified by tiger using 'orcl';
  create materialized view mv1 as select deptno||dname as a from dept@l1;
  alter table mv1 add constraint mv1pk primary key (a);
  alter table dept add (fkcol as (deptno||dname));
  alter table dept add constraint deptfk foreign key (fkcol) references mv1;
  

  I don't know there is a more elegant solution than to use a virtual column, which seemed the best way to get around the concatenation of two columns in a single

• Rename the foreign key constraint

  Hello
  
  I have table tbl_a with a column a_col1 SEO tbl_b.b_col1
  
  I want to create the name of the foreign key as FK_A_COL1 constraint which is FK_ < COLUMN NAME OF the CHILD >.
  
  Foreign naming key standards does not have the use of the name of the child under the name column.
  
  Is there any other solution/script to achieve this?
  
  Thank you.

  fkeys = model.getFKIndexAssociationSet().toArray();
  for (var i = 0; i;//also can use fk.getTable().getAbbreviation()fkname = "FK_"+fk.getTable().getName();cols = fk.getColumns();for( var k = 0;k
  

• How to create a foreign key constraint on a table nested column

  Dear Experts,
  I create 2 tables using the object type. the VESSEL_PARAM table contains the list of the parameters allowed.
  The table VESSEL_TYPE containe single item we list some parameters.
  
  On this table, I love the column VESSEL_PARAM table VESSEL_PARAM to check if the settings are and the reference value is allowed.
  How to create a foreign key?
  Here my script that generates this runtime error: 00904. 00000 - '% s: invalid identifier' on this line
  
  ALTER TABLE VESSEL_PARAM_TAB ADD CONSTRAINT FK_VESSEL_TYPE FOREIGN KEY (NAME, DATA_VALUE)
  REFERENCES VESSEL_PARAM (PARAM_NAME, LIST_PARAM_VALUE. DATA_VALUE)
  

  CREATE OR REPLACE TYPE OBJ_PARAM_VALUE AS OBJECT 
  ( 
    DATA_VALUE  VARCHAR2(20)
   ,DESCRIPTION VARCHAR2(125)
  ) NOT FINAL;
  /
  
  CREATE OR REPLACE TYPE LIST_PARAM_VALUE AS TABLE OF OBJ_PARAM_VALUE;
  /
  
  -- derive object subtype from object supertype
  CREATE OR REPLACE TYPE OBJ_PARAM_NAME UNDER OBJ_PARAM_VALUE (
    NAME VARCHAR2(30)
  )NOT FINAL;
  /
  
  CREATE OR REPLACE TYPE LIST_PARAM_NAME AS TABLE OF OBJ_PARAM_NAME;
  /
  
  Prompt create table VESSEL_PARAM;
  CREATE TABLE VESSEL_PARAM (
     PARAM_NAME   VARCHAR2(20) NOT NULL
    ,PARAM_DESC   VARCHAR2(125)
    ,PARAM_VALUE  LIST_PARAM_VALUE
    ,CONSTRAINT PK_VESSEL_PARAM PRIMARY KEY (PARAM_NAME)
  ) 
  NESTED TABLE PARAM_VALUE STORE AS PARAM_VALUE_TAB
  TABLESPACE CMS_ADMDATA;
  /
  ALTER TABLE PARAM_VALUE_TAB ADD CONSTRAINT UN_PARAM_VALUE_TAB UNIQUE (DATA_VALUE);
  /
  SHOW ERROR;
  
  Prompt create table CMS_ADM.VESSEL_TYPE;
  CREATE TABLE CMS_ADM.VESSEL_TYPE (
    VESSEL_TYPE  VARCHAR2(20) NOT NULL
   ,VESSEL_DESC  VARCHAR2(125)
   ,VESSEL_PARAM LIST_PARAM_NAME
   ,CONSTRAINT PK_VESSEL_TYPE PRIMARY KEY (VESSEL_TYPE)
  -- ,CONSTRAINT FK_VESSEL_TYPE FOREIGN KEY (VESSEL_PARAM) 
  --        REFERENCES VESSEL_PARAM (PARAM_NAME)
  ) 
  NESTED TABLE VESSEL_PARAM STORE AS VESSEL_PARAM_TAB
  TABLESPACE CMS_ADMDATA;
  /
  ALTER TABLE VESSEL_PARAM_TAB ADD CONSTRAINT UN_VESSEL_PARAM_TAB UNIQUE (NAME);
  ALTER TABLE VESSEL_PARAM_TAB ADD CONSTRAINT FK_VESSEL_TYPE FOREIGN KEY (NAME,DATA_VALUE) 
          REFERENCES VESSEL_PARAM (PARAM_NAME,LIST_PARAM_VALUE.DATA_VALUE)
  /
  SHOW ERROR;

  Thank you
  
  Salvatore

  Could you please indicate your answer as correct if you judge them correct.

  Best regards

  Mohamed Houri

• FOREIGN KEY CONSTRAINTS

  Oracle Database 11 g Release 11.2.0.1.0 - 64 bit Production
  PL/SQL Release 11.2.0.1.0 - Production
  CORE 11.2.0.1.0 Production
  AMT for 64-bit Windows: Version 11.2.0.1.0 - Production
  NLSRTL Version 11.2.0.1.0 - Production
  
  Hi all.
  I'm having a problem to add a foreign key to a table constraint, and I was wondering if anyone had any ideas.
  I did my example about as simple as you can get.
  
  CREATE TABLE tparent)
  PID NVARCHAR2 (10) NOT NULL,
  PID2 NVARCHAR2 (10) NULL);
  CREATE UNIQUE INDEX ui_tparent ON tparent (pid);
  
  (Tchild) CREATE TABLE
  CID NVARCHAR2 (10) NOT NULL,
  CID2 NVARCHAR2 (10));
  CREATE UNIQUE INDEX ui_tchild ON tchild (cid);
  ALTER TABLE ADD CONSTRAINT fk_tc_to_tp FOREIGN KEY (cid) tchild REFERENCES tparent (pid);
  
  Error report:
  SQL error: ORA-02270: no unique or primary key corresponding to this column list
  02270 00000 - 'no matching unique or primary key to this list of columns.
  * Cause: A REFERENCES clause in a CREATE/ALTER TABLE statement
  gives a list of columns for which there is no unique or primary match
  key in the referenced table constraint.
  * Action: Find the names of correct column using the ALL_CONS_COLUMNS
  display catalog
  
  ??? Which - as you can see I have a unique index - ui_tparent.
  
  This works fine if I use a PRIMARY KEY and a UNIQUE INDEX?
  That is to say
  ALTER TABLE ADD CONSTRAINT pk_tparent PRIMARY KEY (pid) tparent;
  
  Ora docs say that in order to create a parent needs a UI PK or FK.
  
  Any ideas?
  
  Kind regards

  as I say the mistake:

  no unique or primary key corresponding to this column list

  It takes a unique or primary key and a unique index is not a unique key.

  SQL> CREATE TABLE tparent(
  pid NVARCHAR2(10) NOT NULL,
  pid2 NVARCHAR2(10) NULL);  2    3
  
  Table created.
  
  SQL> alter table tparent add constraint tparent_uk unique (pid);
  
  Table altered.
  
  SQL> CREATE TABLE tchild(
  cid NVARCHAR2(10) NOT NULL,
  cid2 NVARCHAR2(10));  2    3
  
  Table created.
  
  SQL> ALTER TABLE tchild ADD CONSTRAINT fk_tc_to_tp FOREIGN KEY (cid) REFERENCES tparent(pid);
  
  Table altered.
  
  SQL>
  

• stored procedure to disable all foreign key constraints?

  Hi all
  
  I need a stored procedure to disable / enable all the constraints in the database schema.
  
  Create or replace procedure enable_disable_proc (status varchar2 schema_name varchar2 (20)) (3).
  ......
  ....
  ...
  
  
  -> where the 'status' parameter condition must be (YES to activate) (NO to disable)
  -> 'schema_name' is a setting where, this scheme should be affected by this procedure.
  
  
  Thanks in advance...

  Sorry Raineau, you have said foreign keys in the thread title, constraints cannot be turned on and off like that.

  So for foreign keys:

  CREATE OR REPLACE PROCEDURE enab_disab_proc (
     status          IN   VARCHAR2,
     current_schema   IN   VARCHAR2
  )
  IS
  
  BEGIN
     FOR cur_rec IN (SELECT table_name, constraint_name
                       FROM user_constraints
                      WHERE owner = current_schema
                          AND constraint_type  = 'R')
       LOOP
        EXECUTE IMMEDIATE 'ALTER TABLE ' || cur_rec.table_name
                                         || CASE status WHEN 'YES' THEN ' ENABLE ' ELSE ' DISABLE ' END
                                         || 'CONSTRAINT '
                                         || cur_rec.constraint_name;
  
       END LOOP;
  
  END;
  / 
  

• need to based on the primary key of different table 2 foreign key constraint

  I'm using Oracle 11.2.0.3.

  I have 2 table invl with invl_pk as primary key and org with org_pk as the primary key.

  In the third table entity_list, I have entity_pk that can be indvl_pk or org_pk.   How can I create this constraint?

  Thanks for your time.

  Hello

  Assuming that your model is correct, then what you describe is a normal type of ER modeling construction known as a relationship of the CRA. It is characterized by an entity with two or more links that are mutually exclusive to each other (XOR). A typical example may be where a person entity and an entity of the Organization relate both to a bank account entity, but a bank account can only be used by a person or an organization in a mutually exclusive way. In order to serve this on a diagram, an arc is drawn between effective relationships on the side of the child, where the name of a relationship of the CRA.

  Google will be of multiple examples and explanations.

  In a perspective of physical databases, this can be implemented in general in two different ways.

  1. assuming that all parents in the relationship of the CRA have identical PK, that is to say, a number that is generated, the child may have a FK of the same type and an entity of type column that defines what entity the FK is. The advantage of this is that it is a bit more compact and is expandable without schema changes if you want to add more relationships. The downside of this is that the CF cannot be defined at the database level and will build on the code to be executed or both in the application and the database as a trigger.

  2. regardless of types PK for parent entities, the child has a separate optional FK appropriate for each relationship in the arc. Each FK is defined at the database level while maintaining the exclusivity of relationships, a constraint is defined on the table that prevents several FK being filled for a given instance. This can be a little messier that there must be a (column/s) FK for each relationship in the arc, but the relationship may be limited to the level of the object database with the help of FK constraints and a check constraint. This could also be considered to be more technically correct implementation.

  Hope this helps

  André