Expiry Date column in SCD Type 2 Dimension

The Effective Date and Expiry Date in our SCD type 2 dimension is date only (no time component),i want to set the Expiry Date = Effective Date -1 of the new row,

(Means a daybefore)

From The Source

EmpID	EmpName	Salary	RowEffectiveDt
1	Venkat	2000	10/1/2009
1	Venkat	3000	21/1/2010
1	VenkatNaidu	3000	24/1/2010

 Target would be in scd type 2

EmployeeKey	EmpID	EmpName	Salary	RowEffectiveDt	RowExpirationDt	CurrentFlg
1	1	Venkat	2000	10/1/2009	20/1/2010	N
2	1	Venkat	3000	21/1/2010	23/1/2010	N
3	1	VenkatNaidu	3000	24/1/2010	12/31/9999	Y

So How can i handle this type of SCD and it cludes delete flow also

where we will write RowExpiration logic in,i need detail level explanation. 

can any one pls help me

Thanks in advance

---

gvgnaidu