What is the difference between Pooled tables and Cluster tables?

Cluster tables and Pooled tables have many to one relationship with the underlying database.

A table pool corresponds to a table in the database in which all records from the pooled tables assigned to it are stored.
Several logical data records from different cluster tables can be stored together in one physical record in a table cluster.

• A pooled table cannot have the name having more than 10 characters.
• All the key fields of the pooled table must be of character data type.
• In pooled tables, the maximum length of the key field/data fields should not exceed the length of varkey/vardata of the pool respectively.

• In cluster table the records having the same key are stored in a single key in the cluster.
• If there is an overflow of the data records a continuation record is created with the same table key.