49.3. pg_am

The catalog pg_am stores information about index access methods. There is one row for each index access method supported by the system. The requirements for index access methods are discussed in detail in Chapter 58.

Table 49-3. pg_am Columns

NameTypeReferencesDescription
oidoid Row identifier (hidden attribute; must be explicitly selected)
amnamename Name of the access method
amhandleroidpg_proc.oid OID of a handler function that is responsible for supplying information about the access method