The concepts of interval-* composite partitioning are similar to the concepts for range-* partitioning. However, you extend the
PARTITION BY RANGE clause to include the
INTERVAL definition. You must specify at least one range partition using the
PARTITION clause. The range partitioning key value determines the high value of the range partitions, which is called the transition point, and the database automatically creates interval partitions for data beyond that transition point.
The subpartitions for intervals in an interval-* partitioned table are created when the database creates the interval. You can specify the definition of future subpartitions only with a subpartition template. To learn more about how to use a subpartition template, see "Specifying Subpartition Templates to Describe Composite Partitioned Tables".
The following sections show examples for the different interval-* composite partitioning methods.