select * from emp
what happened internally when we write this query in the sql
prompt?

Answer Posted / purna

ALL DATA R STORED IN D PHYSICAL LAYER .....WHEN WE WRITE A QUARY D DATA WILL COM FROM PHYSICAL LAYER 2 SGA (SYSTEM GLOBAL AREA) THROUGH SQL*PLUS LOGICAL LAYER AND GIVES D OUTUT IN D VIEW LAYER
PHYSICAL LAYER...>SQL*PLUS LOGICAL LAYER...>SGA...>VIEW LAYER

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