majority of differences among 9i 10g 11g-these

Question

Majority of Differences among 9i, 10G, 11G:-

These are some combine feature which has differences among others.

1. Automatic Workload Repository (AWR)
2. Drop database' statement
3. Automatic Database Diagnostic Monitor (ADDM)
4. UNDROP a table from a recycle bin rename Table-space
5. Transport Table-space across machine types (E.g. Windows to Unix)
6. Flashback operation on transaction, table or database level