Getting the new products included every month

Question

Hi friends,
Iam having two tables
PRODUCT_CATEGORY - Has the details of the Category of Products
PRODUCT_SUBCATEGORY - The Subcategory details of the Products.
I need to create a view to store the product introduced every month, how can i do this?[as i have the created date in the product category table]
PRODUCT_CATEGORY
id -- name -- cdate---------------------> fields
PRODUCT_SUBCATEGORY
id--catid--name--descriptions ----------------------> Fields
Help me in this

Answer 1

Requirements are not very clear..
Like this..?
sql>select * from t;
ID DT
1  30-JAN-07 
1  31-DEC-06 
sql>
create or replace view vu1
as
select * from t
where to_char(dt,'fmmmyyyy')=to_char(sysdate,'fmmmyyyy');
View created
sql>select * from vu1;
ID DT
1  30-JAN-07 
--now db date changed to 01-feb
sql>select * from vu1;
no rows selected