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*SQL
:Database [http://infogoal.com/sql/sql-alter-table.htm]
=== Useful for Linux and Windows commands===
:In case of slowing down, one of the options may be check the ''indexing option'', here is a help website: [http://www.vistaultimate.com/tweak-windows-vista-indexing.htm indexing].
=== Useful websites for ideas, enlightened===* [http://www.ted.com/ ted]
==Interview Tips==