-- reverse: remame "personal_daten" table
ALTER TABLE "s_personal_daten" RENAME TO "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 "wochen_report" table
ALTER TABLE "wochen_report" DROP COLUMN "ueberstunden";
-- reverse: modify "anwesenheit" table
ALTER TABLE "anwesenheit" DROP COLUMN "anwesenheit_typ", ALTER COLUMN "check_in_out" DROP NOT NULL, ALTER COLUMN "card_uid" DROP NOT NULL;

-- reverse: rename a constraint from "personal_daten_pkey" to "s_personal_daten_pkey"
ALTER TABLE "s_personal_daten" RENAME CONSTRAINT "s_personal_daten_pkey" TO "personal_daten_pkey";