Need Clarification where SQL query is parsed either in Server or in Drivers

hi all,
i'm using OracleXEUniversal database and using Type4(thin) drivers to get communicate from Java.
the queries what i'm giving programmatically, where it will get parse.
either Server will parse, execute them and send back the results
or thin drivers will parse query and the parsed query will send to Server and execute there and return the results.
which one is correct.
if it parsing at Server side only, what is the need of Cleint software.
plz, clarify this doubt.
regards
pavan

Parsing will be done in server side. Need of client software is to see the result.

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