This inheritance list is sorted roughly, but not completely, alphabetically:

Ckdb::tools::Backend	A representation of the backend (= set of plugins) that can be mounted
Ckdb::tools::BackendInfo	Info about a backend
Ckdb::tools::Backends	Allows one to list backends
Ckdb::Context	Provides a context for configuration
Ckdb::KDB	Opens the session with the Key database.
Ckdb::Key	A Key is the essential class that encapsulates key name , value and metainfo .
Ckdb::KeySet	A keyset holds together a set of keys
Ckdb::KeySetIterator
Ckdb::KeySetReverseIterator
Ckdb::tools::Modules	Allows one to load plugins
Ckdb::tools::Plugin
Ckdb::tools::Plugins	A collection of plugins (either get, set or error)
Ckdb::tools::ToolException	All exceptions from the elektratools library are derived from this exception