Well.. I finally got it working the way that I wanted. And yes - a column may appear in more than 1 page.

Here is the way I have designed it.

Table page page_id page_title 1 Geography 2 History

Table page_column column page 1 1 2 1 3 1 4 2

Table column column_id column_title 1 Geog 1 2 Geog 2 3 Geog 3 4 Hist 1

Two things I noticed which Class::DBI required -
1) In table page_column, "column" should be the primary key and not "page"
2) while coding the relationships, its better to use "page" and "column" column names instead of "page_id" and "column_id"

Now the "mapping" stuff as suggested by PodMaster works like a charm, and I can get all columns in page easily.

Thankx a lot for all the help.
I know that this design may not be realistic but it very much suffices me for now.
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arc_of_descent