Fixed Typo and modification date

[whitten]

The previous version had "non-standar Informix" instead of "non-standard Informix"

I'm also curious about the need for the Informix paragraph as the

The document http://informixsoftware.com/ids117/Guide%20to%20SQL%20Tutorial%20Version%20117.pdf
says:
Earlier versions of the database server supported only the IBM Informix extension
to the ANSI-SQL standard syntax for outer joins. This syntax is still supported.
However, the ANSI-SQL standard syntax provides for more flexibility with creating
queries. It is recommended that you use the ANSI-SQL standard syntax to create
new queries. Whichever form of syntax you use, you must use it for all outer joins
in a single query block.

[jleffler]

Thank you for fixing the typo.

The Informix OUTER JOINS paragraph is not necessary if you're coming from anything other than an Informix background. For those of who have worked with Informix, it might be useful to have the information available — it took some effort to create and this was a simple way to make the information available more widely. So, it is entirely optional whether you pay any attention to it. It serves a purpose for me; it may not help anyone else. It certainly isn't a recommendation that any other DBMS should support the Informix OUTER notation; the Standard notations are superior.