which cases we use follwing thinks :
in techical settings , data class section
USER Customer data class
USER1 Customer data class
USER6 Customer data class, generated by SAPDBA
USER7 Customer data class, generated by SAPDBA
DDIM Dimension Tables in BW
DFACT Facts Table in BW
DODS ODS Tables in BW
And also size catagory , which size ( 0 to 8 ) , we need to give . based on which cases , we need to select size catagory .
We use technical settings for
1. Assigning the table to one of the table space available in the database. This we do in data class.
APPLO : here we are assigning our table to master data table space
APPL1 : here we are assigning our table to transaction data table space
APPL2: here we are assigning our table to organization data table space. These data are customizing data that are defined during the system is installed and it is very rarely changed.
The other data classes, USER and USER1, are provided for the customer. These are used to define user developments.
2. size category: size category identifies the amount of disk space needed for the particular table on the database when creating it. If the number of records in a table exceeds the original size category, then more space will automatically be allocated in the database