sql server - Bind SQL query to actual objects (Algebrizer) ,does relational engine need Storage engine's involvement -


background

i have been reading ms sql server query processing internals , of them explains, during execution phase (post parsing & optimization) relational engine talks storage engine data access.

but algebrizer, bind sql text actual objects, need system catalog, believe lies within resource database.

questions

  1. in case , relational engine not need storage engine's during parsing phase (ahead of execution phase)?!

  2. if yes, like, every query execution, there 2 phase of disk/buffer pool reads?

    • to parse (then optimize) ,
    • to execute?

ps: don't think please clarify confusion

cant attach/link query processing picture (don't have enough points link).


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