1. Oracle 9i can have maximum of 256 column for a row.
2. For a partitioned table, each partition has a data segment. Each cluster has a data
segment. The data of every table in the cluster is stored in the cluster's data segment.
3. A tablespace can be online (accessible) or offline (not accessible). A tablespace is taken
offline to make a portion of the database unavailable while allowing normal access to the
remainder of the database.