Reg: cleaning of table

i want to now what are the various possibilities of the cleaning of the table before
transforming data from staging table to the target table.

I think it depends on your business requirements.
I was involved in few data cleaning stages, I have addressed the following issues..
1) representation issues. For example how your circuit number in telecommunication should be stored in the database ?
2) Changed the datatype of column from number to varchar expecting alphanumeric data in future.
3) Loading missing data by obtaining by some means.
4) Established few relationships between tables for future purpose.
5) Putting few check constraints if the cardinality is less.
and so on......
-aijaz

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    Handle:     Sunny4989
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