Add the foreign key refers to a different schema

Similar Questions

• 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

• How do I change or add constr. foreign key to the table whose children or data lines

  Hello
  
  I have a table with the name of Department in which the DEPTNO column is a column of data and primary key in it for all columns. Now, I have a table EMP where DEPTNO column is not having any constraints, including constraint foreign key also. I now have data in the EMP table for all columns. I would now add the DEPTNO column foreign key constraint in the EMP table that references the column DEPTNO in DEPT table. Both the table have not all null values.
  
  I need to add the foreign key without removing the data in the EMP table.
  
  
  Please advice.
  
  Kind regards
  Alriq

  In addition, if you have pre-existing data that will never have a parent record but you want to ensure that any NEW data is consistent with the FK constraint you can always create it with the NOVALIDATE option:

  SQL> CREATE TABLE EMP_BKP AS SELECT * FROM SCOTT.EMP;
  
  Table created.
  
  SQL> CREATE TABLE DEPT_BKP AS SELECT * FROM SCOTT.DEPT;
  
  Table created.
  
  SQL> DELETE FROM DEPT_BKP WHERE DEPTNO=10;
  
  1 row deleted.
  
  SQL> ALTER TABLE DEPT_BKP ADD CONSTRAINT DEPT_BKP_PK PRIMARY KEY(DEPTNO);
  
  Table altered.
  
  SQL> ALTER TABLE EMP_BKP ADD CONSTRAINT DEPT_FK FOREIGN KEY(DEPTNO) REFERENCES DEPT_BKP(DEPTNO);
  ALTER TABLE EMP_BKP ADD CONSTRAINT DEPT_FK FOREIGN KEY(DEPTNO) REFERENCES DEPT_BKP(DEPTNO)
                                     *
  ERROR at line 1:
  ORA-02298: cannot validate (TEST_USER.DEPT_FK) - parent keys not found
  
  SQL> ALTER TABLE EMP_BKP ADD CONSTRAINT DEPT_FK FOREIGN KEY(DEPTNO) REFERENCES DEPT_BKP(DEPTNO) NOVALIDATE;
  
  Table altered.
  
  SQL> INSERT INTO EMP_BKP(EMPNO,ENAME,DEPTNO) VALUES(9999,'Test Emp',10);
  INSERT INTO EMP_BKP(EMPNO,ENAME,DEPTNO) VALUES(9999,'Test Emp',10)
  *
  ERROR at line 1:
  ORA-02291: integrity constraint (TEST_USER.DEPT_FK) violated - parent key not found
  
  SQL> SELECT * FROM EMP_BKP WHERE DEPTNO = 10 ORDER BY EMPNO;
  
       EMPNO ENAME      JOB              MGR HIREDATE                   SAL       COMM     DEPTNO
  ---------- ---------- --------- ---------- ------------------- ---------- ---------- ----------
        7782 CLARK      MANAGER         7839 06/09/1981 00:00:00       2450                    10
        7839 KING       PRESIDENT            11/17/1981 00:00:00       5000                    10
        7934 MILLER     CLERK           7782 01/23/1982 00:00:00       1300                    10
  

• Index and foreign key referring to itself

  Hello!
  
  I'm working on an application that uses a basket stored in a database. The shopping cart uses two tables:
  BASKET: Contains the common information for a shopping cart: the user is logged in etc.
  -Primary key: CART_ID
  
  CART_ROW: A line in the shopping cart, for example a new product to buy.
  -Primary key: ROW_ID
  -Foreign key: CART_ROW. References CART_ID CART. CART_ID
  
  On the code lines in the basket are taken by cart, as is modeled by the foreign key. There is a relationship, that we use in the code, but which is not modelled by a foreign key in the database. A line can be dependent on another line, which makes the other row a parent.
  CART_ROW has a PARENT_ID column that refers to CART_ROW. ROW_ID.
  Would you add a foreign key to PARENT_ID? Or are there issues to consider when it is a foreign key to the same table?
  
  Some time ago, we added the index, both ROW_ID PARENT_ID. The index on PARENT_ID could have harmful, since there is no foreign key?
  
  Best regards!

  user9005175 wrote:
  Hello!

  I'm working on an application that uses a basket stored in a database. The shopping cart uses two tables:
  BASKET: Contains the common information for a shopping cart: the user is logged in etc.
  -Primary key: CART_ID

  CART_ROW: A line in the shopping cart, for example a new product to buy.
  -Primary key: ROW_ID
  -Foreign key: CART_ROW. References CART_ID CART. CART_ID

  On the code lines in the basket are taken by cart, as is modeled by the foreign key. There is a relationship, that we use in the code, but which is not modelled by a foreign key in the database. A line can be dependent on another line, which makes the other row a parent.
  CART_ROW has a PARENT_ID column that refers to CART_ROW. ROW_ID.
  Would you add a foreign key to PARENT_ID? Or are there issues to consider when it is a foreign key to the same table?

  I suggest to add the foreign key, it will not harm performance (except during an insert when there is validation of the foreign key). But it would avoid users to insert bad data / corrupted by code or directly on loggin in the database.

  Some time ago, we added the index, both ROW_ID PARENT_ID. The index on PARENT_ID could have harmful, since there is no foreign key?

  Index on parent_id would be dangerous if you do not use index after it is created (i.e. There is no application that can make use of this index).
  And if you decide to have a foreign key parent_id then I suggest to have too many indexes on parent_id because it would be at least useful when you delete a record in this table.

  Best regards!

• Schema import Gets the foreign key number

  Hi all;

  
  

  Scott has a table named rank-> he has primary key-> different tablespace

  Sharma has a table named emp-> he has foreign key-> different tablespace

  $ imp/System Manager queue = refresh_sharma.dmp log = refresh_sharma_imp.log fromuser = touser = sharma sharma

  Import: Free 11.2.0.1.0 - Production Thursday, may 7, 18:35:03-2015

  Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

  Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production

  With partitioning, OLAP, Data Mining and Real Application Testing options

  Export file created by EXPORT: V11.02.00 direct

  import in US7ASCII and AL16UTF16 NCHAR character set

  import server uses WE8MSWIN1252 (possible character set conversion) character set

  Customer export uses the (possible character set conversion) WE8MSWIN1252 character set

  . import of objects in SHARMA SHARMA

  . . import of partition "CONT_EMP": "P1" 4000 imported lines

  . . import of partition "CONT_EMP": "P2" 5000 imported lines

  . . import of partition 'CONT_EMP': 'P3' 5000 imported lines

  . . "DEPT" table import 12 lines imported

  . . import of table 'EMP' 68278 imported lines

  . . importing table "EMP_AUDIT" 4 imported lines

  . . table 'Method' import 68000 lines imported

  . . importing table "EMP_PERS_INFO" 68278 imported lines

  . . importing table "EMP_PROJ_INFO" 68278 imported lines

  . . table 'LOGTAB' import 603 lines imported

  . . table import "PAYROLL" 186282 imported lines

  . . import of table 'of the PROJECT"22 rows imported

  . . importation of "TAB1" 4000000 imported table rows

  . . table import 'TRANSPORT' 0 rows imported

  IMP-00017: statement failed with error ORACLE 1031:

  'ALTER TABLE 'EMP' ADD 'EMP_EMPLEV_C12_FK' OF CONSTRAINT FOREIGN KEY ("EMP_LEVE" '.

  ""L") REFERS TO"SCOTT" CATEGORY"("GRADE_NAME") ENABLE NOVALIDATE.

  IMP-00003: ORACLE error 1031

  ORA-01031: insufficient privileges

  About to activate the constraints...

  IMP-00017: statement failed with error ORACLE 2430:

  ' ALTER TABLE 'EMP' ENABLE CONSTRAINT "EMP_EMPLEV_C12_FK"

  Import completed successfully with warnings.

  30, 31 line number is display error.

  'ALTER TABLE 'EMP' ADD 'EMP_EMPLEV_C12_FK' OF CONSTRAINT FOREIGN KEY ("EMP_LEVE" '.

  ""L") REFERS TO"SCOTT" CATEGORY"("GRADE_NAME") ENABLE NOVALIDATE.

  After the import operation, to recreate the foreign key is the right option. but

  By performing the import operation, how can all I avoid this error dump file or log file?

  I don't want to use constraints = N.
  

  
  

  Thanks in advance

  
  

  You gave * of * SCOTT * at * SHARMA.  The grant received by SHARMA not getting exported when you export SHARMA.  So, it is not imported when you import SHARMA.  If you did an export and import of SCOTT before SHARMA, the award of the cross-schema would have also been imported.  (Subsidies granted by a user are exported with the user, the subsidies received by a user are not exported with the user).

  Hemant K Collette

• Renaming of the foreign keys in the relational model

  Hello
  
  
  I'm new to the Data Modeler, we use v 3.0.0.66.5 and Oracle 11 g, and I am trying to build a logic and a relational model for a new application.
  
  We always call our primary keys as the ID, this causes me a problem with my names of foreign keys in the relational model, as they show as ID #. Is it possible to add the abbreviated of the table of the foreign key?
  
  Thanks in advance
  
  Sue

  Yes it is.

  Take a look at the tools > preferences, select Data Modeler > naming Standard > model, you can specify the standard you want to use for your foreign key. You can apply this designation to existing models and all new created FK uses the same model. To apply the standard to existing templates, select the relational model in the browser, right-click to display the context menu and select the menu "apply Naming standards... ».

  Sue

• Please, I have the following question on the foreign key and the ora-00904

  Thanks in advance!
  
  I created the table:
  
  Create the Department table
  (
  DNAME varchar (15) NOT NULL,
  deptID number (5) NOT NULL,
  Primary key (dname, deptid)
  )
  
  then...
  
  Create table Manager
  (
  MgrID number (10) not null,
  Not null, name varchar (10)
  Start_date date not null,
  Primary key (mgrid),
  
  CONSTRAINT fk_department
  FOREIGN KEY (dname, deptip)
  Department of REFERENCES (dname, deptid)
  )
  
  Trying to create the table with the constraint, it yeilds one:
  
  ORA-00904: "DNAME": invalid identifier
  +.. .with an asterisk under "dname" in line: FOREIGN KEY (dname, deptip) +.
  
  I tried joining my name of the column with quotation marks ("" "); capitalized for consistency; and we tried creating and editing then - all to nothing will do. I also tried to use the user interface with Oracle Express Edition and the moment where I click on create, the same error appears. Could someone help please straighten out me up - was this threat for four days.
  
  Thanks again!

  Hello

  Welcome to the forum!

  Columns that will reference the other table must be declared just like all the other columns; including the names in a FOREIGN KEY constraint is not auotmatically define them.
  It works:

  CREATE TABLE Manager
  (       mgrid          NUMBER (10)     NOT NULL,
       Name          VARCHAR (10)     NOT NULL,
       Start_date      DATE          NOT NULL,
       dname          VARCHAR2 (15),               -- New
       deptid          NUMBER (5),               -- New
  PRIMARY KEY (mgrid),
       --
  CONSTRAINT fk_department
  FOREIGN KEY           (dname, deptid)
  REFERENCES department (dname, deptid)
  );
  

  (assuming that the departments table, you posted, there).

  Is there a reason why you use VARCHAR instead of VARCHAR2?

  In the departments table, do you really need both dname and deptid in the primary key? For example, if you have a line with name = "ACCOUNTING" and deptid = 10; is it possible that you could have another line with deptid = 10 and some different dname, say 'REASEARCH '? It is more common to only have a deptid as primary key and have columns in the foreign key constraints that reference.

• How did the foreign key that is recognized by the primary key

  Hi, when I have two user tables and userLevel and the primary key of the user is the user name and I add a field to userLevel userID is only to make the userID field in userLevel automatically the foreign key of the table? Or do you switch the engine of MyISAM tables to InnoDB to make relational links. Can someone please explain this in English clear to me, because I just can't get my head around this.

  In the case of a query such as SELECT statement, we talked, being a key actually means that the field is indexed so that the database can quickly look up.  Thus, in phpMyAdmin, you set the field to be indexed by the visualization of the structure of the table and clicking the icon index (the one with the Lightning) for the field in the Action section.

  If you are looking for integrity refrential between tables we also talked about and using the InnoDB engine, you can click the link 'Show the relational' in the table structure page of phpMyAdmin and define foreign key constraints.

• 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/

• How can I make sure that changes in a primary key (in the parent table) would also appear directly in the FOREIGN KEY in the child table?

  Forgive my question. I am very new to Oracle.

  How can I make sure that changes in the key primary supplier_id (concerning the supplier table) would also appear directly in the FOREIGN KEY (supplier_id) in the products table?

  Is that not all the primary key and FOREIGN KEY on?

  My paintings:

  I created 2 tables and connect to apply in the data base referential integrity, as I learned.

  CREATE TABLE - parent provider

  (the numeric (10) of supplier_id not null,)

  supplier_name varchar2 (50) not null,

  Contact_Name varchar2 (50).

  CONSTRAINT supplier_pk PRIMARY KEY (supplier_id)

  );

  CREATE TABLE - child products

  (the numeric (10) of product_id not null,)

  supplier_id numeric (10) not null,

  CONSTRAINT fk_supplier

  FOREIGN KEY (supplier_id)

  REFERENCES beg (supplier_id)

  );

  I inserted the following text:

  INSERT INTO provider

  (supplier_id, supplier_name, contact_name)

  VALUES

  (5000, 'Apple', 'first name');

  I expect that the supplier_id (5000) to the provider of the table also appears in the products table under key supplier_id having the same value which is 5000. But this does not happen.

  How to get there?

  Thanks in advance!

  Hello

  What is a foreign key in Oracle?

  A foreign key is a way to ensure referential integrity in your Oracle database. A foreign key means that the values of a table must appear also in another table.

  Ok!??

  What is now the right way to implement referential integrity in your Oracle database that the values of a table must also be included in another table?

  A foreign key referential integrity indeed enfore in ensuring that the value in the child table must have a corresponding parent key (otherwise you will encounter an error, as evidenced by "SomeoneElse"). However, it will never automatically insert a row in the other table.

  If you are looking for a solution that automatically inserts a record in the other table, maybe you should go for triggers:

  See:

  • http://docs.Oracle.com/CD/B28359_01/AppDev.111/b28370/triggers.htm#BABCIBBJ
  • Oracle: Help after HAVING INSERT and AFTER UPDATE triggers

• Term plurals changes the name of the foreign key in the relational model

  Hello

  I use a glossary with plurals for entities such as Budget turned to the budgets of the table in the relational model. Unfortunately (for me) it also changes the name of the foreign key. In the related entity, an attribute (for example) is Budget_fiscal year, I expect in the relational model, being the same, but it is transformed into budgets_fiscal_year (budgets in the plural rather than keep him in singular form).

  How can I avoid any change in the attribute names (in the process of engineering in the relational model) but always turn the names of entities from the singular to the plural names for tables?

  Thank you and best regards

  Robert

  Hi Philippe

  Your suggestion 1) works - thank you! budgets_fiscal_year is the attribute of pk exercise in my budget of the entity. It seems a standard behavior of the Data Modeler to compose the UID of the relationship of budgets_fiscal_year (for some reason, this column is not taken the logical model, but the relational model). I would prefer that it be appointed budget_fiscal_year.

  I have not defined any parameter for this (intentionally). But maybe somewhere there by default. Could you tell me where the design parameters in Data Modeler to learn how to configure the definitions mentioned in 2)?

  As I'm always busy with the model of reverse engineering data, I'll wait for DM 4.1.1.888.

  Best regards

  Robert

• Optimize the foreign key for the removal of the cascade constraint.

  Hello

  JDeveloper version: 11.1.2.3.0

  I saw this blog and found something new to me: http://snag.gy/qI6dY.jpg

  Jdeveloper user interface, there is an option to select all tables to select the foreign key and set it for the removal of the waterfall.

  My project is deployed on multiple databases. I wonder where this change is registered. None of the project files is modified.

  Can I make this change (from limitations to the waterfall) for each database that I use?

  Here is the blog where I saw that: http://tompeez.wordpress.com/2013/04/22/master-detail-insertdelete-sample/

  I have my object associations optimized for the removal of the waterfall, but without the option above together, I always get constraint violations...

  Concerning

  Not sure however if you set the option the DOF looks like

  	"EMP_JOB_FK' FOREIGN KEY ('JOB_ID') CONSTRAINT
  	REFERENCES 'HR '. "" SELECT JOBS "("JOB_ID') WE DELETE CASCADE

  If you set the option to cascade for fk Job_id from the employees table.

  Timo

• Drop partition without disabling the foreign key

  Hi all
  
  I have a table parent and child.
  
  Parent table
  
  create the table parent_1
  (identification number,
  create_date date,
  Constraint parent_1_pk001 PRIMARY KEY (id))
  PARTITION OF RANGE (create_date)
  INTERVAL (NUMTODSINTERVAL(1,'DAY'))
  (PARTITION parent_1_part VALUES LESS THAN (January 1, 2010 '));
  
  Child table
  create the table child_1
  (identification number,
  create_date date,
  Constraint child_1_fk001 FOREIGN KEY (id)
  REFERENCES parent_1 (id))
  PARTITION OF RANGE (create_date)
  INTERVAL (NUMTODSINTERVAL(1,'DAY'))
  (PARTITION create_date_part VALUES LESS THAN (January 1, 2010 '));
  
  
  I have problems to delete partition.
  Parent_1
  1 JULY 26, 12
  2 JULY 26, 12
  
  Child_1
  1 JULY 26, 12
  
  ALTER drop partition table CHILD_1 SYS_P274;
  table altered CHILD_1.
  
  ON THE PARENT PARTITION A FALL
  ALTER drop partition table parent_1 SYS_P273;
  
  Error report:
  SQL error: ORA-02266: unique/primary keys in table referenced by foreign keys enabled
  02266 00000 - "unique/primary keys in table referenced by foreign keys enabled.
  * Cause: An attempt was made to truncate a single table or
  primary keys referenced by foreign keys in another table.
  Other unauthorized trades are a drop/truncate partition a
  partitioned table or an ALTER TABLE EXCHANGE PARTITION.
  * Action: Before performing the operations described above, the table, disable the
  constraints foreign key in other tables. You can see what
  constraints are making reference to a table by issuing the following
  command:
  SELECT * FROM USER_CONSTRAINTS WHERE TABLE_NAME = 'tabnam ';
  
  
  PLEASE KNOW IF THERE IS A WAY TO THE PARENT PARTITION DROP WITHOUT TOGGLE FOREIGN CONSTRAINTS
  
  
  Thank you

  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 do 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

• 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
  

• Identify the foreign key table

  I have a table that has a few constraints that are foreign keys to other tables (see column FK_ETHNIC below). My naming conventions are consistent so they all start with 'FK_ ". In SQL, how can I find the table that the foreign key column references? I have a process that must find this table and then get all of its columns.
  Thank you!
  
  CREATE TABLE STU_BASE
  (PK_ID VARCHAR2 (32), sys_guid() by default)
  CONSTRAINT pk_stu_base
  KEY ELEMENTARY SCHOOL
  With the HELP of INDEX TABLESPACE sis_express_index
  STORAGE (INITIAL 524288
  NEXT 524288
  PCTINCREASE 0),.
  STUDENT_ID VARCHAR2 (15).
  Fk_stu_base_ethnic FK_ETHNIC VARCHAR2 (32) CONSTRAINT
  REFERENCES
  Ethnic (PK_ID)
  REMOVE THE NULL VALUE;
  
  CREATE TABLE ETHNIC
  (PK_ID VARCHAR2 (32), sys_guid() by default)
  CONSTRAINT pk_ethnic
  KEY ELEMENTARY SCHOOL
  With the HELP of INDEX TABLESPACE sis_express_index
  STORAGE (4096 INITIAL
  NEXT 4096
  PCTINCREASE 0),.
  VARCHAR2 (2) ETHNIC,.
  ETHNIC_DESC VARCHAR2 (30),
  STATE_CODE VARCHAR2 (2),
  FEDERAL_CODE VARCHAR2 (2))

  You could do a self-join with CONSTRAINTS (USER, ALL, s/n) views. You can search a constrainttype of 'R' and you can attach it to itself based on the R_OWNER and R_CONSTRAINT_NAME columns.

  For example:

  SELECT r1.owner      AS child_owner
       , r1.table_name AS child_table
       , r2.owner      AS parent_owner
       , r2.table_name AS parent_table
  FROM   all_constraints r1
  JOIN   all_constraints r2 ON  r2.owner           = r1.r_owner
                            AND r2.constraint_name = r1.r_constraint_name
  WHERE  r1.constraint_type = 'R'
  ;
  

  Published by: Centinul on February 16, 2012 15:36