I want to design specific class hierarchy consisting of three classes: Certificate, Organization, User. Both Certificate and Organization seem to me to be kinda
data-access-object
open-banking
pluggable
scriptaculous
excel-lambda
settings.bundle
urp
infiniband
junction
iis-8.5
azure-xplat-cli
woothemes
sar
lightmode
android-inputtype
lexical-scope
ordinal-data
.x
query-variables
svgutils
alm
youtrack
file-system-storage
keyboard-shortcuts
settings.settings
uibutton
total.js
radscheduler
chaining
fbml