Update data from a view

Question

Hi,
trying to update data from a view with:
- Company (table)
- Products (table)
In a form, the user wants to update
e.g: both products.product_name and Company.company_name.
Is there a way to update a view records built on 2 tables ?
Any idea will be really appreciated
Thks

Answer 1

An other question on INSTEAD OF Trigger:
Base Tables:
1.
SQL> desc pcs_companies;
Name Null? Type
COMPANY_ID NOT NULL NUMBER(12)
COUNTRY VARCHAR2(350)
COMPANY_NAME VARCHAR2(320)
COMPANY_PHONE VARCHAR2 (320)
COMPANY_FAX VARCHAR2(320)
COMPANY_URL VARCHAR2(150)
UPDATED_DATE DATE
2.
SQL> desc pcs_individuals;
Name Null? Type
INDIVIDUAL_ID NOT NULL NUMBER(12)
COMPANY_ID NUMBER(12)
FIRST_NAME VARCHAR2(320)
LAST_NAME VARCHAR2(320)
LOB VARCHAR2(300)
JOB_ROLE VARCHAR2(300)
TITLE VARCHAR2(300)
GENDER VARCHAR2(3)
EMAIL VARCHAR2(720)
FAX VARCHAR2(720)
PHONE_NO VARCHAR2(720)
UPDATED_DATE DATE
COUNTRY VARCHAR2(150)
ADDRESS_1 VARCHAR2(720)
ADDRESS_2 VARCHAR2(720)
ADDRESS_3 VARCHAR2(720)
CITY VARCHAR2(720)
3. pcs_individuals.COMPANY_ID = FK, ref pcs_companies.
4.
SQL> CREATE VIEW V_PCS_COMPANY_IND
AS
SELECT
   i.INDIVIDUAL_ID,
   c.company_id,
   c.country,
   c.Company_name,
   c.company_phone,
   i.Company_id indiv_company_id,
   i.gender,
   i.first_name,
   i.last_name,
   i.lob,
   i.job_role,
   i.title,
   i.email_address,
   i.fax,
   i.phone_no ,
   i.address_1,
   i.address_2,
   i.address_3,
   i.city
FROM
  pcs_individuals i,
  pcs_companies c
WHERE
  i.company_id = c.company_id
5.
CREATE OR REPLACE TRIGGER PCS_ADMIN.PCS_COMP_IND_UPDATE_TR
INSTEAD OF UPDATE ON PCMS_ADMIN.V_PCS_COMPANY_IND
FOR EACH ROW
begin
update PCS_COMPANIES
set
     Company_name = nvl(:new.company_name,company_name),
     company_phone = nvl(:new.company_phone,company_phone)
where company_id = :new.company_id;
update PCS_INDIVIDUALS
set
     gender = nvl(:new.gender,gender),
first_name = nvl(:new.first_name,first_name),
     last_name = nvl(:new.last_name,last_name),
     lob = nvl(:new.lob,lob),
     title = nvl(:new.title,title),
     email_address = nvl(:new.email_address,email_address),
phone_no = nvl(:new.phone_no,phone_no),
     fax = nvl(:new.fax,fax),
     country = nvl(:new.country,country),
     address_1 = nvl(:new.address_1,address_1),
     address_2 = nvl(:new.address_2,address_2),
     address_3 = nvl(:new.address_3,address_3),
     city = nvl(:new.city,city)
where company_id = :new.company_id;
end PCMS_COMP_IND_UPDATE_TR;
6.
CREATE OR REPLACE TRIGGER PCS_ADMIN.NEW_COMPANY_ID_INSERT
INSTEAD OF INSERT ON PCS_ADMIN.V_PCS_COMPANY_IND
DECLARE
ID number;
BEGIN
INSERT INTO pcs_companies (org_id)
select v_pcs_comp_id_seq.nextval
into ID
from dual;
:new.company_id = ID;
INSERT INTO pcs_individuals (company_id)
select v_pcs_comp_id_seq.nextval
into ID
from dual;
:new.company_id = ID;
end;
My question
On point 6:
Assumption:
- Company_id is PK of pcs.Company and FK in pcs.individuals
- It should be feed by sequence (v_pcs_comp_id_seq)
Now how can i insert the same value for company_id (current.v_pcs_comp_id_seq) in both pcs_companies and pcs_individuals ? I've tested it in the above INSTEAD OF Trigger.It failed.
Thks for any advice,
lamine