We currently planing to build our staging area from source database (Oracle 11g database)
So we decided to do 1 to 1 mapping for each table but there are some tables that contains huge data (millions of records) and for these tables we decide to do indexing to fasting the extraction using data services to our staging database but at the same time I think will affect the loading to staging area
So my question is the indexes is recommended to be created in staging area?