My understanding is that some mathematical background will help to better under realtional databases especially set theory. I think it would be more in designing databases rather than writing sqls.
my 2 cents
On Fri, Sep 12, 2008 at 7:46 AM, Hemant K Chitale
<hkchital@xxxxxxxxxxxxxx> wrote:
Some understanding that tables can be viewed as sets and SQL operations work on "sets" of data instead of the "row-by-row" approach of procedural methods is quite desirable. I've seen people floundering when they can't differentiate between the two.
That's the reply I was looking for.
It's more fundamental than understanding relational theory.
Getting past the hurtle of thinking in a row-by-row context
( slow-by-slow ala Tom Kyte) is probably the hardest concept
for procedural programmers to master.
Once you can think in terms of sets rather than rows, it all
becomes much clearer.
--
Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist
