Plz Anyone i need help

hi,
i have a question if someone can awnser that i am designing a data warehouse with dimensions and fact table. The current operational data base has four year old data. Two of the dimensions are slowly changing dimension. My question is how do you load the dimension with previous 4 years data and do you start the slowly changing dimension process right from the first row or option 2 you load four years previous data and then implement the slowly changing data. Please im new to data warehouse and stuck in big time plzzz if some one can reply and help me out. either here or email me [email protected]
Arjumand

Thank You so much. My question is i have an account table and an account history table in the operational data base. When ever a change is made to the account table a trigger is fired and new row with old valu and a new value is inserted into the account history table in the operational data base but in account history table only that old and new value is inserted not the full detail of an account. I have designed an account dimension from which table would i start loading the table and if i want to also include the changes is that possible. I am new working hard so need help. When we for the first time load the dimension do we load all the previous years data first and then implement slowly changing dimension theory or we just do it after the dimension is loaded and when the new data arrives from that point we implement slowly changing dimension.
Thank you

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