Different types of database indexes?

I am trying to compile a list of non-system-specific database indexes. I've looked at Oracle, DB2, MySQL, Postgres and Sybase, and almost every resource has a different list. So far I have seen:

clustered, multi-dimensional clustered, unclustered, unique,
non-unique, b-tree, hash, GiST, GIN, full-text, bitmap,
partitioned, function-based.

It seems that different systems have different names for the same types of indexes.

Are there standard index types across all systems?


You should scour harder :-) - Wiki gives a good description


Many of the these concepts are orthogonal. A clustered index means that the rows are arranged in the table in the same order as they appear in the index. Independently, that index can be implemented using a B-tree, a B+ tree, a hash, spatially, etc. And then it may partition the table or not. One aspect may constrain but does not necessarily imply another.

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