Good tips Jeff.
Also - if working on a data warehouse environment forget about: bitmap indexes, materialized views, star-transformation and query rewrite. SQL Server offers a much simpler yet solid platform.
By the way, also forget about the differences in between PL/SQL and SQL*Plus - the beauty of SQL Server is that relies on a single, powerfull T-SQL language.
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Pablo (Paul) Berzukov
Author of Understanding Database Administration available at Amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.