On Fri, Aug 5, 2016 at 2:54 AM, Anastasia Lubennikova <a.lubennik...@postgrespro.ru> wrote:
> They can be logically separated into three categories: > "primary storage" - r, S, t, v. They store data and visibility information. > The only implementation is heapam.c > "secondary index" - i. They store some data and pointers to primary storage. > Various existing AMs and managed by AM API. > "virtual relations" - c, f, m. They have no physical storage, only entries > in caches and catalogs. Materialized views (relkind == "m") have physical storage, and may have indexes. -- Kevin Grittner EDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
