hiding the details of how data is storedLastName

Map the student into relational schema

a$.$ student $($roll no$,$ first$\_$name, last$\_$name, birthdate, phoneno$)$

phone$\_$student$($phoneno$,$ roll no$)$

b$.$ student $($roll no$,$ first$\_$name, last$\_$name, birthdate$)$

phone$\_$student$($phoneno roll no$)$

c$.$ student $($rol$)$ no first$\_$name, last$\_$name, birthdate phoneno$)$

d$.$ student $($roll ric name borthdate, phoneno$)$

phore rtudentiptipneng rol nol

a$.$ database state

b$.$ conceptutal representation

c$.$ data abstraction $x$

d$.$ metadata