How to create apps that write code to retrieve data with foreign keys?

Hi Guys

Off late, I've grown with programming that requires more than a number of tables that has foreign keys with other tables' primary keys. It takes a really cumbersome coding to retrieve the code from another table with the other table having foreign keys. My question is, how do we program VS 2005 such that it does all the retrieval of the data from the database instead of us writing the code all by ourself?

Is it really good database technique to bend the normalcy rules and have one to two columns having redundant data?

Can anyone tell me how to write code that retrieves the foreign key data when the data from the other table is called?

Thanks

You use the Pk-FK relation to join the two tables and retrieve the columns from either of the two tables.

SELECT t1.col1, t2,col2, t2.col3

FROM Table1 t1

JOIN Table2 t2 ON t1.somecolumn = t2.somecolumn

Assuming the 'SomeColumn' here is the common column between the two tables, the above SELECT statement can be modified to retrieve columns from either of the tables. And I dont think it is cumbersome to retrieve info from another table. Your tables have to be properly normalized. This is the key. Joining too many tables in the query could also be detrimental. It depends on how well your tables are normalized.

>> Is it really good database technique to bend the normalcy rules and have one to two columns having redundant data?
It may not be a good tatabase technique to bend normalcy rules but from a practical/real world perpspective, sometimes, people do have redundant data. If you have enough justification (not just laziness or saving time or writing less code) then yes.

>>Can anyone tell me how to write code that retrieves the foreign key data when the data from the other table is called?
Sure, I did that above already.

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Thanks ndinakar for the reply. Code that I referred here is not the SQL query, that is not the cause of concern as I too know to retrieve the data from another table which has the Pk-Fk relationship another table with an SQL query. However, it often requires quite a lot of C# or VB code to retrieve the data from the other table when relationships are used.

Can you tell me if there are any in-built code that could be used to retrieve the data from the Pk table given the Fk table? I think I was not clear in my post and this is now clear.

Thanks

sql