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CREATE TABLE S(SID NUMBER PRIMARY KEY, NAME VARCHAR2(50), MARKS NUMBER); CREATE TABLE SA(SA NUMBER PRIMARY KEY,SID NUMBER, ACTION VARCHAR2(50),OLD_MARKS NUMBER,NEW_MARKS NUMBER, ACTION_DATE DATE);CREATE TABLE students ( student_id NUMBER PRIMARY KEY, name VARCHAR2(50), marks NUMBER ); -- Audit table for logs CREATE TABLE student_audit ( action_id NUMBER PRIMARY KEY, student_id NUMBER, action VARCHAR2(20), old_marks NUMBER, new_marks NUMBER, action_date DATE );

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