block : in-line anonymous function written {|params| ... }. Compiled as a normal function if it is not a closure
closure : a block that shares variables with its containing function
column : string name of a database column (see also field)
field : numeric index of a field, usually in a record (see also column)
hamt : hash array mapped trie immutable persistent data structure used by info and meta
info : faster changing part of metadata, stats and index information
meta : database metadata, consisting of layered info and schema
persist : save the database state to storage, normally done once per minute rather than after every commit to reduce write amplification
schema : slower changing part of metadata
action : a "query" that performs an action, insert, update, or delete (QueryDo)
admin : a database administration command, e.g. create, alter, drop
singleton : a query that selects at most one record e.g. where a key equals a value