The side below lists the certification titles like
70-433: TS: Microsoft SQL Server 2008, Database Development
which seems is already retired (July 2013 I read elsewhere). It seems if someone who already has this certification cab take:
70-457: Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1
70-458: Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 2
Question 1: Can one still take 70-433 and then attempt to take 70-457 and or 70-458?
Question 2: Why there is no xx-xxx: TS: Microsoft SQL Server 2012, Database Development to take?