To avoid writing database code in the front end

Question

Hello,
I am working on a database application using 10g database as backend and dotnet as front end. I wish to execute only oracle stored procedure for all the select (to avoid hard parse and use of bind variable), DDL and DML operations; just to avoid writing database code in the front end. Can anyone please give me a little examples of :
1.Select query's output to be return as resultset by stored procedure.
2.DML example by stored procedure.
3.Any DDL example by stored procedure.
using scott.emp, so that i would just call the stored procedure, rather than giving select,DML and/or DDL commands in the front end. Even though i have read in the documentation, but a clear cut examples will help me to get into clear concept as well.
Thanks & Regards
Girish Sharma

Answer 1

Hi...
-->Select example
create or replace procedure get_emp(rc out sys_refcursor)
is
begin
open rc for select * from emp;
end;
-->DML example
create or replace procedure do_dml_emp(pempid in number,
pempname varchar2,
result out number)
is
begin
insert into emp(empid,empname) values(pempid,pempname) returning empid into result;
exception
when others then
result:=-1;
end;
-->DDL example
create or replace procedure ddl_emp(colname varchar2,
coltype varchar2,
result out number)
is
begin
result:=-1;
execute immediate 'alter table emp add column ' || colname || ' ' || coltype ;
result:=1;
end;