Firstly always CC the mailing list.
ben wilko wrote:
> I am looking to have a dynamic page which will allow users to select
> categories in which a corresponding PDF file will be accessible to them.
That doesn't make any difference.. It becomes two database tables:
create table downloadfile (fileid serial primary key, filename text);
create table downloadfile_categories (fileid int references downloadfile
(fileid), categoryid int references categories (categoryid));
then a file can be available for multiple categories and so on.
If you really want to store binary data in the database, start here:
http://www.postgresql.org/docs/8.1/static/datatype-binary.html
and here:
http://php.net/pg_escape_bytea
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