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Ops are executed by jd (jd'...') and can run in the user Jd task or on a server Jd task. Ops are documented in the following families:

info - info list

read - read reads readtc

change - delete insert update

create - createcol createdb createtable createptable

drop - dropcol dropdb dropfilesize droptable

rename - renamecol renametable

join - ref

csv - csvcdefs csvdump csvprobe csvrd csvreport csvrestore csvscan csvwr

table-table - tablecopy tableinsert tablemove

misc - close flush gen get option set validate

Some ops include an example that can run in your current session (examples save/restore current jdaccess).

   jdex_jd_'' NB. list ops with example

Tutorials show Jd in action:

   jdrt_jd_'' NB. list tutorials