Can we create a foreign key by using built in functions?

Similar Questions

• create a foreign key

  I'm creating a foreign key between two tables with the following command
  
  
  ALTER TABLE core_business.cb_insured_person ADD)
  CONSTRAINT fk_present_prov_cty_cbi
  FOREIGN KEY (present_province_code, present_city_code)
  General_information.cb_city (province_code, city_code) NOVALIDATE REFERENCES);
  
  
  I have the DBA privilege and I used to do this work, but when I run stated above I give error of insufficient privileges, how can I solve this problem...
  
  
  CREATE THE TABLE CORE_BUSINESS. CB_INSURED_PERSON
  (
  NUMBER OF IP_REGION_FO_CODE (4, 0) NOT NULL
  , IP_CHECK_DIGIT VARCHAR2 (1 BYTE) NOT NULL
  NUMBER OF IP_SERIAL_NO (6, 0) NOT NULL
  NUMBER OF EO_CODE (6: 0)
  NUMBER OF REGISTRATION_CODE (2, 0)
  TITLE VARCHAR2 (5 BYTE)
  , VARCHAR2 (35 BYTE) NAME NOT NULL
  OLD_NIC_NO VARCHAR2 (13 BYTE)
  NEW_NIC_NO VARCHAR2 (15 BYTE)
  VARCHAR2 (6 BYTE) FAMILY_CODE
  SEX VARCHAR2 (1 BYTE)
  RELATIVE_NAME VARCHAR2 (35 BYTE)
  NUMBER OF RELATIONSHIP_CODE (3, 0)
  DATE_OF_BIRTH DATE
  DATE_OF_JOINING_EOBI DATE
  PRESENT_ADDRESS VARCHAR2 (100 BYTE)
  NUMBER OF PRESENT_PROVINCE_CODE (2, 0)
  NUMBER OF PRESENT_CITY_CODE (5, 0)
  NUMBER OF PRESENT_POST_CODE (5, 0)
  PRESENT_TELEPHONE VARCHAR2 (30 BYTE)
  CONSTRAINT PK_CB_INSURED_PERSON PRIMARY KEY
  (
  IP_REGION_FO_CODE
  IP_CHECK_DIGIT
  IP_SERIAL_NO
  )
  ENABLE
  )
  LOGGING
  TABLESPACE "EOBI.
  PCTFREE 10
  INITRANS 1
  STORAGE
  (
  747634688 INITIAL
  MINEXTENTS 1
  MAXEXTENTS 2147483645
  USER_TABLES KEEP
  );
  
  
  CREATE TABLE GENERAL_INFORMATION. CB_CITY
  (
  NUMBER OF PROVINCE_CODE (2, 0) NOT NULL
  NUMBER OF CITY_CODE (5, 0) NOT NULL
  , NAME VARCHAR2 (25 BYTE) NOT NULL
  AREA_CODE VARCHAR2 (6 BYTE)
  VARCHAR2 (1 BYTE) STATUS NOT NULL
  , CREATED_BY VARCHAR2 (10 BYTE) NOT NULL
  CREATED_DATE DATE NOT NULL
  , MODIFIED_BY VARCHAR2 (10 BYTE) NOT NULL
  MODIFIED_DATE DATE NOT NULL
  NUMBER OF DIVISION_CODE (5, 0)
  NUMBER OF DISTRICT_CODE (5, 0)
  CONSTRAINT PK_PRV_CTY PRIMARY KEY
  (
  PROVINCE_CODE
  CITY_CODE
  )
  ENABLE
  )
  LOGGING
  TABLESPACE "EOBI.
  PCTFREE 10
  INITRANS 1
  STORAGE
  (
  81920 INITIAL
  MINEXTENTS 1
  MAXEXTENTS 2147483645
  DEFAULT USER_TABLES
  );
  
  
  CREATE A UNIQUE GENERAL_INFORMATION INDEX. CB_CITY_PK ON GENERAL_INFORMATION. CB_CITY (NAME ASC)
  LOGGING
  TABLESPACE "EOBI_IDX".
  PCTFREE 10
  INITRANS 2
  STORAGE
  (
  65536 INITIAL
  MINEXTENTS 1
  MAXEXTENTS 2147483645
  DEFAULT USER_TABLES
  );
  
  CREATE A UNIQUE GENERAL_INFORMATION INDEX. CB_CITY_UK ON GENERAL_INFORMATION. CB_CITY (CSA, CSA CITY_CODE PROVINCE_CODE)
  LOGGING
  TABLESPACE "EOBI_IDX".
  PCTFREE 10
  INITRANS 2
  STORAGE
  (
  65536 INITIAL
  MINEXTENTS 1
  MAXEXTENTS 2147483645
  DEFAULT USER_TABLES
  );

  The schema CORE_BUSINESS has REFERENCES and privileges SELECT on the table that you want to refer to the foreign key constraint?

• Need to create a primary key by using sequence in a table with records.

  Hello
  I want to create a primary key for a table that is already having a huge number of records. Am thinking to create the primary key by using a sequence generator. Could someone tell how can I do this using SQL or PL - SQL.
  
  Kind regards
  SK

  Hello

  Try this...

  SQL> select * from emp;
  
       EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
  ---------- ---------- --------- ---------- --------- ---------- ---------- ----------
        7369 SMITH      CLERK           7902 17-DEC-80        800                    20
        7499 ALLEN      SALESMAN        7698 20-FEB-81       1600        300         30
        7521 WARD       SALESMAN        7698 22-FEB-81       1250        500         30
        7566 JONES      MANAGER         7839 02-APR-81       2975                    20
        7654 MARTIN     SALESMAN        7698 28-SEP-81       1250       1400         30
        7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
        7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
        7788 SCOTT      ANALYST         7566 19-APR-87       3000                    20
        7839 KING       PRESIDENT            17-NOV-81       5000                    10
        7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0         30
        7876 ADAMS      CLERK           7788 23-MAY-87       1100                    20
        7900 JAMES      CLERK           7698 03-DEC-81        950                    30
        7902 FORD       ANALYST         7566 03-DEC-81       3000                    20
        7934 MILLER     CLERK           7782 23-JAN-82       1300                    10
  
  14 rows selected.
  
  SQL> create sequence emp_empno_seq
    2  start with 1
    3  minvalue 1
    4  maxvalue 999999999999999999999
    5  increment by 1
    6  nocache
    7  noorder
    8  nocycle;
  
  Sequence created.
  
  SQL>
  SQL> ed
  Wrote file afiedt.buf
  
    1  update emp
    2* set empno=emp_empno_seq.nextval
    3  /
  
  14 rows updated.
  
  SQL> commit;
  
  Commit complete.
  
  SQL> select * from emp;
  
       EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
  ---------- ---------- --------- ---------- --------- ---------- ---------- ----------
           1 SMITH      CLERK           7902 17-DEC-80        800                    20
           2 ALLEN      SALESMAN        7698 20-FEB-81       1600        300         30
           3 WARD       SALESMAN        7698 22-FEB-81       1250        500         30
           4 JONES      MANAGER         7839 02-APR-81       2975                    20
           5 MARTIN     SALESMAN        7698 28-SEP-81       1250       1400         30
           6 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
           7 CLARK      MANAGER         7839 09-JUN-81       2450                    10
           8 SCOTT      ANALYST         7566 19-APR-87       3000                    20
           9 KING       PRESIDENT            17-NOV-81       5000                    10
          10 TURNER     SALESMAN        7698 08-SEP-81       1500          0         30
          11 ADAMS      CLERK           7788 23-MAY-87       1100                    20
          12 JAMES      CLERK           7698 03-DEC-81        950                    30
          13 FORD       ANALYST         7566 03-DEC-81       3000                    20
          14 MILLER     CLERK           7782 23-JAN-82       1300                    10
  
  14 rows selected.
  

  Thank you
  Prakash P

• 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

• Can I buy an activation key and use the Windows 7 Upgrade disk to upgrade to Windows 7?

  CAN I BUY AN ACTIVATION KEY AND USE MY OLD DRIVE TO UPGRADE TO WINDOWS 7 UPGRADE FROM WINDOWS XP?

  Yes, you can:

  http://www.Microsoft.com/Windows/buy/default.aspx

  http://Windows.Microsoft.com/en-us/Windows7/get-a-new-Windows-product-key

  The upgrade to Windows XP?

  Please read these instructions carefully and completely before you begin installing Windows 7: there are important steps that you must follow to upgrade your PC from Windows XP to Windows 7 in order to preserve your files and settings.

  Before you begin, you'll need to backup all your data to an external storage device, and you will need all the installation discs for the programs that you want to keep. Please make sure that you have an external hard drive (see details below).

  More detailed instructions are available at windows.microsoft.com/upgrade-windows-xp. Here are the basic steps.

  1. start Windows Upgrade Advisor (windows.microsoft.com/upgradeadvisor) to see if there are known issues that may affect the installation and the question of whether you should install the version of 32 or 64 bit Windows 7.

  2 back up your files and settings on an external hard drive using Windows Easy Transfer (windows.microsoft.com/windows-easy-transfer). If you do not have an external hard drive, you will not be able to use Windows Easy Transfer. Alternatively, you can copy the files you want to keep on a USB stick, CD or DVD.

  3. you will need to manually reinstall your programs, such as Microsoft Office, after I installed Windows 7. Gather the installation for your programs and all partner/license product key discs. You may be able to download programs from the Internet. For example, Windows Live Messenger can be installed from the download.live.com/messenger.

  4. Insert the Windows 7 DVD in your PC. When asked "which type of installation you want. Click on "Custom (advanced)."

  5. when Windows 7 is installed, use Windows Easy Transfer to restore your files and settings.

  If you are not comfortable Windows 7 installation, check with a local retail or the services of the PC company store to see if they offer upgrade services.

  http://www.notebooks.com/2009/10/13/WinXP-to-Win7/

• Maker of SQL data - how to create the foreign key in the relationship 1 to 1?

  Hi guys...
  
  I had 2 tables...
  
  Table 1 - CFR
  -----------------------
  CFR_ID = primary key
  
  
  Table 2 - USER_PLAN
  ----------------------------
  User_id = primary key
  PLAN_ID ARGUMENT,
  CFR_ID = reference foreign key (table 1)
  
  
  Business flow go like this...
  table insdie CFR, it contains all the documents / transactions of a particular plan user. each time a new transaction occurs for a plan/user, a new CFR_ID / row will be generated.
  After that, the newly generated for the new line, CFR_ID will be updated to the CFR_ID in USER_PLAN
  
  
  Thus, there is always a 1 to 1 relationship between table 2, no matter how much CFR_ID is generated for a particular USER_PLAN. as the CFR_ID in the USEr_plan table will always be the last being produced within the table of the CFR.
  
  
  However, in the Data Modeler, I am unable to create this foreign key relationship... NO idea how create a 1 on 1 relationship of foreign key? or there is no way...
  
  
  Thank you and best regards,
  Noob

  Hey Noob,

  Yes, that's correct.

  Best regards
  Philippe

• 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

• Please, help me to create the foreign key.

  Oracle 10g using sqldbx
  
  I tried everything I could but all in vain.
  
  (Folder) CREATE TABLE
  FolderId INT NOT NULL PRIMARY KEY,
  FolderName varchar (255) NOT NULL,
  CreatedBy varchar (255) NOT NULL,
  CreateDate TIMESTAMP NOT NULL
  )
  
  
  (Document) CREATE TABLE
  DocumentID INT NOT NULL PRIMARY KEY,
  FolderId INT NOT NULL,
  DocumentTitle varchar (255) NOT NULL,
  DocumentAuthor varchar (255) NOT NULL,
  CreateDate TIMESTAMP NOT NULL
  )
  
  
  
  Document of ALTER TABLE ADD CONSTRAINT fkdocument FOREIGN KEY (document.folderid) REFERENCES (the folder. FOLDERID)
  
  the last statement says invalid folder name. Help, please

  Hello

  Welcome to the forum!

  See the Manual of the SQL language for the correct syntax:

  ALTER TABLE     document
  ADD CONSTRAINT      fkdocument
  FOREIGN KEY      (folderid)
  REFERENCES      folder (FOLDERID)
  ;
  

  Thanks for posting your code! It is very useful.
  Have you seen the FAQ forum yet? {message: id = 9360002}

• Can I create two tasks of IA using the same unit of data acquisition?

  Hi all

  Sorry for the question of gumby, but I'm new to all this stuff DAQmx, and I'm trying to understand how it all works.

  I use a USB-6229 with LabVIEW 8.6.1.

  I would use 30 lines HAVE to monitor 30 voltage remote signals.

  I would use the other two lines of AI to perform input voltage independent tasks.

  I tried to create and start the two tasks, but I get an error message when I try to start the second task.  He tells me that the resource is not available.

  What is the cleaner way to configure things working for me?

  Thanks in advance.

  -FB

  Hi diarmaede,

  You can only create one task to HAVE on your card. Read all your DO this card in a loop. You can divide the result and send it to different loops to work on it.

  It will be useful.

  Mike

• Creating a relationship creates no foreign key attribute (s)

  Hello

  In my logical model, I have an entity supertype/subtype with 2 subtypes with no own attributes (each subtype has only 1: m relationship). When I create the relationship of 1:m of subtype to another entity (the entity-side m), there is no attribute generated FK. I found a trick to create the relationship first of Supertype in the other entity, and then reconnect it to the subtype. Then, the foreign key is generated (I see that in the dialogue relationship property > FK attributes).

  So I guess it's a bug.

  Robert

  Hi Robert,.

  Thanks for reporting the issue that is fixed in 4.1.2 code

  Philippe

• How to create a foreign key

  Hai
  
  I have two table
  
  Nrgp_main
  
  Nrgpno here is primary ky
  
  And NRGP_ITEM
  
  I need NRGPno as foreign key I dropped it and I now I need to recreate
  
  
  I have an error inIt
  
  
  ALTER table nrgp_item add constraint
  FK_NRGPITA foreign key (nrgpno) references nrgp_main (nrgpno);
  
  
  Error
  
  FK_NRGPITA foreign key (nrgpno) references nrgp_main (nrgpno)
  *
  
  ERROR on line 2:
  ORA-02270: no unique or primary key corresponding to this column list
  
  
  Concerning
  
  sRikkanth

  Hello

  You do something like that?

  SQL> create table a(n number primary key);
  
  Table created.
  
  SQL> create table b(n number);
  
  Table created.
  
  SQL> alter table b
    2  add constraint
    3  fk_n foreign key(n) references a(n);
  
  Table altered.
  
  SQL> alter table b
    2  drop constraint fk_n;
  
  Table altered.
  
  SQL> alter table b
    2  add constraint
    3  fk_n foreign key(n) references a(n);
  
  Table altered.
  

  Twinkle

• Create table - foreign key

  Hi all.
  
  I started to create tables in SQL.
  
  My question is about the best way to refer to a column as a foreign key.
  
  Example:
  
  A simple way to make a primary key field.
  
  CREATE table emp (emp_id number (3.0) not null not the primary key)
  
  This will create emp_id as the primary key of the table emp.
  
  
  If there is another field, dept_no and this must be the foreign key.
  
  CREATE table emp (emp_id number (3.0) not null primary key, dept_no?)
  
  
  So my question is what is the most easy, less complicated way to make the dept_no field a foreign key to the emp table
  
  Thank you
  GtG

  Try like this...

  CREATE table emp (emp_id number (3.0) not null primary key, done dept_no refers to table_name (coluimn_name));

  -Clément

• How can I create extensible components for re-use?

  How can I create a button that stretches (such as the scale-9) with the text label? I create all of my graphics in illustrator rather than photoshop to get real FXG markup instead of embed all images?

  This has been addressed in the FAQ.

  Please see if the discussion he answer your question.

  -Bear

• How can I create an interactive database report using internal functions of APEX?

  Hello

  We are currently migrating our client applications of APEX 4.2 to 5 APEX. One of these APEX applications using Excel to create a page of interactive report. This means that the user can select a view, materialized in the Excel plugin as a source and he or she can select columns. After you save the changes, a stored procedure uses wwv_flow_api.create_page (...), wwv_flow_api.create_worksheet (...), wwv_flow_api.create_worksheet_rpt (...) to create a new page in the Apex with the sql query generated. To synchronize report columns, wwv_flow_worksheet_standard.synch_report_columns has been used so far (4 Apex). Apex 5 call Wwv_flow_worksheet_standard.synch_report_columns will return "Internal error ORA - 20987 APEX".

  We can create a new page in the Apex with an interactive report, but the report columns are not created. If I edit this page in the application builder and add a dummy column to the query of source of interactive report, all columns will be created. Therefore, there is a solution to create and display columns of APEX 5 report, which must be done by synch_report_columns.

  I know that it is not recommended to use not documented, apex-internal functions and procedures, but we have currently no time to implement another solution. It would be great if we could use the built-in apex to create an interactive report from a given sql query.

  Does anyone have any experience with creating a page from base to APEX 5 apex? Or is anyone know how we can sync/update the columns of an interactive report without manually adding a dummy column?

  In which case it is important: we use a database of Oracle 12 c and our theme is not universal theme.

  Thanks for your help,

  Elizabeth

  Hi Elizabeth,.

  Take a look at apex_app_builder.create_ir_page which is used by the packed app 'Data Reporter'. This type of support and also simplifies the creation of a page of the IR from the line level API set that you used before. For details have a look at the procedure of add_report_page of the EBA_DP package which is installed by the app package.

  Concerning

  Patrick

• Can I create a homegroup between devices using Windows 7 and Windows 8?

  Hello. Upstairs, I have a pc with Windows 7 home premium. My printer is connected to it. Downstairs, I have a new laptop with Windows home premium 8.

  The PC is connected to internet wireless. So the laptop, except that it's pretty close to the top for one Ethernet cable to use.

  I would like to have access to the printer from my laptop and to be able to share files.

  A solution via a homegroup, but Microsoft Help says that both devices must be running Windows 7.

  Is this correct?

  If so, is there another way I can access the printer from the laptop?
  Thanks in advance,
  Laurence

  Hi Laurence!

  You can put the two computers in the same workgroup.

  Please see here: http://windows.microsoft.com/en-us/windows/networking-home-computers-running-different-windows#networking-home-computers-running-different-windows=windows-7

  Hope that helps!

  See you soon

  Julia