What happens to index once the table got dropped?

In Oracle when dropping a table

• all table indexes and domain indexes are dropped
• any triggers defined on the table are dropped
• if table is partitioned, any corresponding local index partitions are dropped
• if the table is a base table for a view or if it is referenced in a stored procedure, function, or package, then these dependent objects are invalidated but not dropped

In Postgres

DROP TABLE always removes -
1. any indexes
2. rules
3. triggers
4. constraints
that exist for the target table.