-- reverse rename "s_personal_daten" table
ALTER TABLE "s_personal_daten" RENAME TO "personal_daten";

DROP TABLE "s_personal_daten";
-- reverse: create "s_anwesenheit_typen" table
DROP TABLE "s_anwesenheit_typen";
-- reverse: create "s_abwesenheit_typen" table
DROP TABLE "s_abwesenheit_typen";
-- reverse: modify "anwesenheit" table
ALTER TABLE "anwesenheit" DROP COLUMN "manuelle_buchung";