If you feel a blog entry is inappropriate, click here to notify Toolbox for IT.Welcome to Linux Questions.org, a friendly and active Linux Community. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration.By default each trigger is Statement-Level trigger for making Row-Level trigger we use key word FOR EACH ROW in create trigger statement. Before and After Triggers: There are two types using of these triggers BEFORE and AFTER. The regex's don't pose a problem, of course, it's the trigger acting on the same table that activated it that does.create or replace trigger update_emp_thru_outemp_view instead of update on outemp referencing new as new begin update emp set ename = :new.ename, empno = :new.empno, job = :new.job, mgr = :new.mgr, hiredate = :new.hiredate, sal = :new.sal, comm = :new.comm, deptno = ( select deptno from dept where dname = :new.dname ) where empno = :old.empno; if ( sql%rowcount = 0 ) then raise_application_error ( -20001, 'Error updating the outemp view !!!This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant.They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
In plsql there is a execution parameter, AUTONOMOUS TRANSACTION, which executes in an isolated session DML operations and a commit, without committing my current sessions DML activity.Click Here to receive this Complete Guide absolutely free.Hi all, Is there a database section in Linux Questions? I tried some DB forums, but you don't get much response. I have a very large database and need to stock data concerning elements within the same table and in the same table to avoid joining tables, for optimisation purposes.' ); end if; end; select * from emp where ename = 'C Farmer'; EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO ---------- ---------- --------- ---------- --------- ---------- ---------- 3456 C Farmer DBA 7839 01-JUL-02 4000 4 40 1 row selected.update outemp set dname = 'dkjsk' where ename = 'C Farmer'; update outemp set dname = 'dkjsk' where ename = 'C Farmer' * ERROR at line 1: ORA-01407: cannot update ("SCOTT"."EMP"."DEPTNO") to NULL ORA-06512: at "SCOTT.
A trigger is a program in a database that gets called each time a row in a table is INSERTED, UPDATED, or DELETED.