Mismatch in the salary values appearing in the back end

While using the salary basis based on rates, the values appearing in front end in the person management page is appearing different than the back end. This is the query i am using.

    
SELECT DISTINCT

PAPF.PERSON_NUMBER,

PPNF.DISPLAY_NAME,

PAAM.PERSON_ID,

PAAM.ASSIGNMENT_ID,

PEA.EMAIL_ADDRESS,

CSBT.salary_basis_name,

PRDFV.BASE_NAME,

CSPC.rate_amount
FROM

PER_ALL_PEOPLE_F PAPF,

PER_ALL_ASSIGNMENTS_M PAAM,

PER_PERSON_NAMES_F PPNF,

CMP_SALARY CS,

    CMP_SALARY_BASES CSB,

    CMP_SALARY_BASES_TL CSBT,

    CMP_SALARY_PAY_COMPONENTS CSPC,

	PAY_RATE_DEFINITIONS_F PRDFV,

    --PAY_RATE_DEFINITIONS_F_VL PRDFV,