diff --git a/update/migration-utf8mb4.php b/update/migration-utf8mb4.php
index 3b7bb08..eb78179 100644
--- a/update/migration-utf8mb4.php
+++ b/update/migration-utf8mb4.php
@@ -290,6 +290,8 @@ foreach($zielTabellen as $schluessel => $z)
 			$gemeinsam[] = $name;
 		elseif(($ersatz = ersatzwert($spalte)) !== null)
 			$ergaenzt[$name] = $ersatz[0];
+		elseif(stripos($spalte["extra"], "auto_increment") === false)
+			$hinweise[] = "Spalte ".$z["name"].".".$name." fehlt in der Quelle, es gilt der Standardwert ".$spalte["standard"].".";
 	}
 	foreach(array_diff(array_keys($q["spalten"]), array_keys($z["spalten"])) as $name)
 		$hinweise[] = "Spalte ".$q["name"].".".$name." gibt es im neuen Schema nicht, sie wird nicht übernommen.";
diff --git a/update/schema.sql b/update/schema.sql
index 060cbe5..b445e2a 100644
--- a/update/schema.sql
+++ b/update/schema.sql
@@ -4,39 +4,44 @@
 -- stammen aus ingwa, weil sie dort fehlen, der Code sie aber braucht.
 -- Einheitlich utf8mb4. Die Anwendung verbindet sich im strikten sql_mode
 -- (siehe db_verbinden() in incs/db.php).
+--
+-- Pflichtspalten haben als DEFAULT den Wert, den der frühere nicht strikte
+-- Modus beim Weglassen eingesetzt hat ('', 0, Nulldatum). Weggelassene
+-- Spalten verhalten sich damit wie bisher; ungültige Werte, zu lange Texte
+-- und falsche Verweise lehnt der strikte Modus trotzdem ab.
 
 SET NAMES utf8mb4;
 SET FOREIGN_KEY_CHECKS = 0;
 
 CREATE TABLE `accesstype` (
   `id` tinyint(3) NOT NULL AUTO_INCREMENT,
-  `typ` varchar(20) NOT NULL,
+  `typ` varchar(20) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `addKey` (
-  `accesskey` int(11) NOT NULL,
-  `datetime` datetime NOT NULL
+  `accesskey` int(11) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00'
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `adresse` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `partner_id` int(11) NOT NULL,
-  `anrede_id` int(5) NOT NULL,
-  `anrede2_id` int(5) NOT NULL,
-  `titel_id` int(5) NOT NULL,
-  `titel2_id` int(5) NOT NULL,
-  `vname` varchar(50) NOT NULL,
-  `vname2` varchar(50) NOT NULL,
-  `nname` varchar(50) NOT NULL,
-  `nname2` varchar(50) NOT NULL,
-  `firma` varchar(50) NOT NULL,
-  `str_id` int(11) NOT NULL,
-  `typ_id` int(2) NOT NULL,
-  `hnr` varchar(10) NOT NULL,
-  `zusatz` varchar(100) NOT NULL,
-  `gebdat` date NOT NULL,
-  `gebdat2` date NOT NULL,
+  `partner_id` int(11) NOT NULL DEFAULT 0,
+  `anrede_id` int(5) NOT NULL DEFAULT 0,
+  `anrede2_id` int(5) NOT NULL DEFAULT 0,
+  `titel_id` int(5) NOT NULL DEFAULT 0,
+  `titel2_id` int(5) NOT NULL DEFAULT 0,
+  `vname` varchar(50) NOT NULL DEFAULT '',
+  `vname2` varchar(50) NOT NULL DEFAULT '',
+  `nname` varchar(50) NOT NULL DEFAULT '',
+  `nname2` varchar(50) NOT NULL DEFAULT '',
+  `firma` varchar(50) NOT NULL DEFAULT '',
+  `str_id` int(11) NOT NULL DEFAULT 0,
+  `typ_id` int(2) NOT NULL DEFAULT 0,
+  `hnr` varchar(10) NOT NULL DEFAULT '',
+  `zusatz` varchar(100) NOT NULL DEFAULT '',
+  `gebdat` date NOT NULL DEFAULT '0000-00-00',
+  `gebdat2` date NOT NULL DEFAULT '0000-00-00',
   PRIMARY KEY (`id`),
   KEY `fk_partner_titel_id` (`titel_id`),
   KEY `fk_partner_anrede_id` (`anrede_id`),
@@ -52,16 +57,16 @@ CREATE TABLE `adresse` (
 
 CREATE TABLE `adresstyp` (
   `id` int(2) NOT NULL AUTO_INCREMENT,
-  `typ` varchar(20) NOT NULL,
+  `typ` varchar(20) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `altlasten` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `vacationdays` int(11) NOT NULL,
-  `hours` decimal(8,4) NOT NULL,
-  `ma_id` int(11) NOT NULL,
-  `last_generated` date NOT NULL,
+  `vacationdays` int(11) NOT NULL DEFAULT 0,
+  `hours` decimal(8,4) NOT NULL DEFAULT 0,
+  `ma_id` int(11) NOT NULL DEFAULT 0,
+  `last_generated` date NOT NULL DEFAULT '0000-00-00',
   PRIMARY KEY (`id`),
   KEY `fk_altlasten_user_id` (`ma_id`),
   CONSTRAINT `fk_altlasten_user_id` FOREIGN KEY (`ma_id`) REFERENCES `user` (`id`) ON UPDATE CASCADE
@@ -69,17 +74,17 @@ CREATE TABLE `altlasten` (
 
 CREATE TABLE `anrede` (
   `id` int(5) NOT NULL AUTO_INCREMENT,
-  `anrede` varchar(20) NOT NULL,
+  `anrede` varchar(20) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `artikel` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `bezeichn` varchar(150) NOT NULL,
-  `typ_id` int(5) NOT NULL,
-  `datetime` datetime NOT NULL,
-  `user_id` int(11) NOT NULL,
-  `einheit_id` int(11) NOT NULL,
+  `bezeichn` varchar(150) NOT NULL DEFAULT '',
+  `typ_id` int(5) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `user_id` int(11) NOT NULL DEFAULT 0,
+  `einheit_id` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_artikel_typ_id` (`typ_id`),
   KEY `fk_art_rech_einheit_id` (`einheit_id`),
@@ -90,11 +95,11 @@ CREATE TABLE `artikel` (
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `artikel_eigensch` (
-  `art_id` int(11) NOT NULL,
-  `eig_id` int(11) NOT NULL,
-  `rech_id` int(11) NOT NULL,
-  `posnr` int(5) NOT NULL,
-  `artposnr` int(11) NOT NULL,
+  `art_id` int(11) NOT NULL DEFAULT 0,
+  `eig_id` int(11) NOT NULL DEFAULT 0,
+  `rech_id` int(11) NOT NULL DEFAULT 0,
+  `posnr` int(5) NOT NULL DEFAULT 0,
+  `artposnr` int(11) NOT NULL DEFAULT 0,
   KEY `fk_art_eig_art_id` (`art_id`),
   KEY `fk_art_eig_rech_id` (`rech_id`),
   KEY `fk_art_eig_eig_id` (`eig_id`),
@@ -104,17 +109,17 @@ CREATE TABLE `artikel_eigensch` (
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `artikel_rechn` (
-  `art_id` int(11) NOT NULL,
-  `rech_id` int(11) NOT NULL,
-  `posnr` int(5) NOT NULL,
-  `rabatt` int(3) NOT NULL,
-  `rabatttyp` int(2) NOT NULL,
-  `menge` decimal(6,3) NOT NULL,
+  `art_id` int(11) NOT NULL DEFAULT 0,
+  `rech_id` int(11) NOT NULL DEFAULT 0,
+  `posnr` int(5) NOT NULL DEFAULT 0,
+  `rabatt` int(3) NOT NULL DEFAULT 0,
+  `rabatttyp` int(2) NOT NULL DEFAULT 0,
+  `menge` decimal(6,3) NOT NULL DEFAULT 0,
   `preis` decimal(10,2) DEFAULT NULL,
-  `angtyp` int(1) NOT NULL,
-  `artmwst` int(3) NOT NULL,
-  `wanr` varchar(100) NOT NULL,
-  `pagebreak` int(1) NOT NULL,
+  `angtyp` int(1) NOT NULL DEFAULT 0,
+  `artmwst` int(3) NOT NULL DEFAULT 0,
+  `wanr` varchar(100) NOT NULL DEFAULT '',
+  `pagebreak` int(1) NOT NULL DEFAULT 0,
   `id` int(11) NOT NULL AUTO_INCREMENT,
   PRIMARY KEY (`id`),
   KEY `fk_art_rech_art_id` (`art_id`),
@@ -124,11 +129,11 @@ CREATE TABLE `artikel_rechn` (
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `artikel_termin` (
-  `art_id` int(11) NOT NULL,
-  `termin_id` int(11) NOT NULL,
-  `menge` decimal(6,3) NOT NULL,
-  `rabatt` int(3) NOT NULL,
-  `wanr` varchar(100) NOT NULL,
+  `art_id` int(11) NOT NULL DEFAULT 0,
+  `termin_id` int(11) NOT NULL DEFAULT 0,
+  `menge` decimal(6,3) NOT NULL DEFAULT 0,
+  `rabatt` int(3) NOT NULL DEFAULT 0,
+  `wanr` varchar(100) NOT NULL DEFAULT '',
   KEY `fk_art_term_art_id` (`art_id`),
   KEY `fk_art_term_ang_id` (`termin_id`),
   CONSTRAINT `fk_art_term_ang_id` FOREIGN KEY (`termin_id`) REFERENCES `termin` (`id`) ON UPDATE CASCADE,
@@ -137,15 +142,15 @@ CREATE TABLE `artikel_termin` (
 
 CREATE TABLE `artikelsks` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `rechnr` int(11) NOT NULL,
-  `bezeichn1` varchar(60) NOT NULL,
-  `bezeichn2` varchar(60) NOT NULL,
-  `menge` decimal(6,3) NOT NULL,
+  `rechnr` int(11) NOT NULL DEFAULT 0,
+  `bezeichn1` varchar(60) NOT NULL DEFAULT '',
+  `bezeichn2` varchar(60) NOT NULL DEFAULT '',
+  `menge` decimal(6,3) NOT NULL DEFAULT 0,
   `beschr` text DEFAULT NULL,
-  `pos` tinyint(3) NOT NULL,
-  `rabatt` tinyint(3) NOT NULL,
+  `pos` tinyint(3) NOT NULL DEFAULT 0,
+  `rabatt` tinyint(3) NOT NULL DEFAULT 0,
   `preis` decimal(10,2) DEFAULT NULL,
-  `datetime` datetime NOT NULL,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
   PRIMARY KEY (`id`),
   KEY `fk_artikelsks_rech_id` (`rechnr`),
   CONSTRAINT `fk_artikelsks_rech_id` FOREIGN KEY (`rechnr`) REFERENCES `rechnung` (`rechnr`) ON UPDATE CASCADE
@@ -153,20 +158,20 @@ CREATE TABLE `artikelsks` (
 
 CREATE TABLE `artikeltyp` (
   `id` int(5) NOT NULL AUTO_INCREMENT,
-  `bezeichn` varchar(50) NOT NULL,
-  `dropdown` tinyint(1) NOT NULL,
-  `list` tinyint(1) NOT NULL,
+  `bezeichn` varchar(50) NOT NULL DEFAULT '',
+  `dropdown` tinyint(1) NOT NULL DEFAULT 0,
+  `list` tinyint(1) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `ausgabe` (
-  `id` int(11) NOT NULL,
-  `user_id` int(11) NOT NULL,
-  `partner_id` int(11) NOT NULL,
-  `rec_kto_id` int(11) NOT NULL,
-  `send_kto_id` int(11) NOT NULL,
-  `betr` decimal(12,3) NOT NULL,
-  `rabatt` decimal(4,1) NOT NULL,
+  `id` int(11) NOT NULL DEFAULT 0,
+  `user_id` int(11) NOT NULL DEFAULT 0,
+  `partner_id` int(11) NOT NULL DEFAULT 0,
+  `rec_kto_id` int(11) NOT NULL DEFAULT 0,
+  `send_kto_id` int(11) NOT NULL DEFAULT 0,
+  `betr` decimal(12,3) NOT NULL DEFAULT 0,
+  `rabatt` decimal(4,1) NOT NULL DEFAULT 0,
   KEY `fk_ausg_user_id` (`user_id`),
   KEY `fk_ausg_reckto_id` (`rec_kto_id`),
   KEY `fk_ausg_sendkto_id` (`send_kto_id`),
@@ -179,26 +184,26 @@ CREATE TABLE `ausgabe` (
 
 CREATE TABLE `bank` (
   `id` int(5) NOT NULL AUTO_INCREMENT,
-  `blz` varchar(30) NOT NULL,
-  `bank` varchar(100) NOT NULL,
+  `blz` varchar(30) NOT NULL DEFAULT '',
+  `bank` varchar(100) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `buchungsKontos` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `kto` int(11) NOT NULL,
-  `name` varchar(100) NOT NULL,
-  `descr` text NOT NULL,
+  `kto` int(11) NOT NULL DEFAULT 0,
+  `name` varchar(100) NOT NULL DEFAULT '',
+  `descr` text NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `eigensch` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `bezeichn` varchar(100) NOT NULL,
-  `wert` varchar(50) NOT NULL,
-  `einheit_id` int(11) NOT NULL,
-  `datetime` datetime NOT NULL,
-  `user_id` int(11) NOT NULL,
+  `bezeichn` varchar(100) NOT NULL DEFAULT '',
+  `wert` varchar(50) NOT NULL DEFAULT '',
+  `einheit_id` int(11) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `user_id` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_eigensch_user_id` (`user_id`),
   KEY `fk_eigensch_einheit_id` (`einheit_id`),
@@ -208,16 +213,16 @@ CREATE TABLE `eigensch` (
 
 CREATE TABLE `einheit` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `einheit` varchar(10) NOT NULL,
-  `si` tinyint(1) NOT NULL,
+  `einheit` varchar(10) NOT NULL DEFAULT '',
+  `si` tinyint(1) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `kontakt` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `partner_id` int(11) NOT NULL,
-  `typ_id` int(3) NOT NULL,
-  `kontakt` varchar(100) NOT NULL,
+  `partner_id` int(11) NOT NULL DEFAULT 0,
+  `typ_id` int(3) NOT NULL DEFAULT 0,
+  `kontakt` varchar(100) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`),
   KEY `fk_kontakt_typ_id` (`typ_id`),
   KEY `fk_kontakt_partner_id` (`partner_id`),
@@ -227,18 +232,18 @@ CREATE TABLE `kontakt` (
 
 CREATE TABLE `kontakttyp` (
   `id` int(3) NOT NULL AUTO_INCREMENT,
-  `typ` varchar(20) NOT NULL,
+  `typ` varchar(20) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `konto` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `bank_id` int(5) NOT NULL,
-  `partner_id` int(11) NOT NULL,
-  `inhaber` varchar(50) NOT NULL,
-  `iban` varchar(30) NOT NULL,
-  `swift` varchar(15) NOT NULL,
-  `ktonr` varchar(20) NOT NULL,
+  `bank_id` int(5) NOT NULL DEFAULT 0,
+  `partner_id` int(11) NOT NULL DEFAULT 0,
+  `inhaber` varchar(50) NOT NULL DEFAULT '',
+  `iban` varchar(30) NOT NULL DEFAULT '',
+  `swift` varchar(15) NOT NULL DEFAULT '',
+  `ktonr` varchar(20) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`),
   KEY `fk_kto_partner_id` (`partner_id`),
   KEY `fk_kto_bank_id` (`bank_id`),
@@ -248,18 +253,18 @@ CREATE TABLE `konto` (
 
 CREATE TABLE `land` (
   `id` int(5) NOT NULL AUTO_INCREMENT,
-  `land_short` varchar(5) NOT NULL,
-  `land` varchar(30) NOT NULL,
-  `datetime` datetime NOT NULL,
+  `land_short` varchar(5) NOT NULL DEFAULT '',
+  `land` varchar(30) NOT NULL DEFAULT '',
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `log` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `typ_id` tinyint(3) NOT NULL,
-  `user_id` int(11) NOT NULL,
-  `datetime` datetime NOT NULL,
-  `qry` text NOT NULL,
+  `typ_id` tinyint(3) NOT NULL DEFAULT 0,
+  `user_id` int(11) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `qry` text NOT NULL DEFAULT '',
   `undo_qry` text DEFAULT NULL,
   PRIMARY KEY (`id`),
   KEY `fk_log_accesstype_id` (`typ_id`),
@@ -270,12 +275,12 @@ CREATE TABLE `log` (
 
 CREATE TABLE `message` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `send_id` int(11) NOT NULL,
-  `rec_id` int(11) NOT NULL,
+  `send_id` int(11) NOT NULL DEFAULT 0,
+  `rec_id` int(11) NOT NULL DEFAULT 0,
   `head` varchar(50) DEFAULT NULL,
-  `msg` text NOT NULL,
-  `rd` tinyint(1) NOT NULL,
-  `datetime` datetime NOT NULL,
+  `msg` text NOT NULL DEFAULT '',
+  `rd` tinyint(1) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
   PRIMARY KEY (`id`),
   KEY `fk_msg_senduser_id` (`send_id`),
   KEY `fk_msg_recuser_id` (`rec_id`),
@@ -285,17 +290,17 @@ CREATE TABLE `message` (
 
 CREATE TABLE `mwst` (
   `id` int(3) NOT NULL AUTO_INCREMENT,
-  `mwst` decimal(4,1) NOT NULL,
+  `mwst` decimal(4,1) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `mykonto` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `bank_id` int(5) NOT NULL,
-  `inhaber` varchar(50) NOT NULL,
-  `iban` varchar(30) NOT NULL,
-  `swift` varchar(15) NOT NULL,
-  `ktonr` varchar(20) NOT NULL,
+  `bank_id` int(5) NOT NULL DEFAULT 0,
+  `inhaber` varchar(50) NOT NULL DEFAULT '',
+  `iban` varchar(30) NOT NULL DEFAULT '',
+  `swift` varchar(15) NOT NULL DEFAULT '',
+  `ktonr` varchar(20) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`),
   KEY `fk_mykto_bank_id` (`bank_id`),
   CONSTRAINT `fk_mykto_bank_id` FOREIGN KEY (`bank_id`) REFERENCES `bank` (`id`) ON UPDATE CASCADE
@@ -303,10 +308,10 @@ CREATE TABLE `mykonto` (
 
 CREATE TABLE `notiz` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `partner_id` int(11) NOT NULL,
-  `notiz` text NOT NULL,
-  `datetime` datetime NOT NULL,
-  `color` varchar(6) NOT NULL,
+  `partner_id` int(11) NOT NULL DEFAULT 0,
+  `notiz` text NOT NULL DEFAULT '',
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `color` varchar(6) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`),
   KEY `fk_notizen_partner_id` (`partner_id`),
   CONSTRAINT `fk_notizen_partner_id` FOREIGN KEY (`partner_id`) REFERENCES `partner` (`id`) ON UPDATE CASCADE
@@ -314,11 +319,11 @@ CREATE TABLE `notiz` (
 
 CREATE TABLE `ort` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `ort` varchar(30) NOT NULL,
-  `ortsteil` varchar(30) NOT NULL,
-  `plz` varchar(15) NOT NULL,
-  `vwahl` varchar(15) NOT NULL,
-  `land_id` int(5) NOT NULL,
+  `ort` varchar(30) NOT NULL DEFAULT '',
+  `ortsteil` varchar(30) NOT NULL DEFAULT '',
+  `plz` varchar(15) NOT NULL DEFAULT '',
+  `vwahl` varchar(15) NOT NULL DEFAULT '',
+  `land_id` int(5) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_ort_land_id` (`land_id`),
   CONSTRAINT `fk_ort_land_id` FOREIGN KEY (`land_id`) REFERENCES `land` (`id`) ON UPDATE CASCADE
@@ -326,15 +331,15 @@ CREATE TABLE `ort` (
 
 CREATE TABLE `partner` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `datetime_new` datetime NOT NULL,
-  `datetime_lastchange` datetime NOT NULL,
-  `user_id` int(11) NOT NULL,
-  `typ_id` int(2) NOT NULL,
-  `zahlziel_id` int(3) NOT NULL,
-  `rabatt` int(3) NOT NULL,
-  `sks_not_checked` int(1) NOT NULL,
-  `sks_kdnotiz` text NOT NULL,
-  `updated_by` int(11) NOT NULL,
+  `datetime_new` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `datetime_lastchange` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `user_id` int(11) NOT NULL DEFAULT 0,
+  `typ_id` int(2) NOT NULL DEFAULT 0,
+  `zahlziel_id` int(3) NOT NULL DEFAULT 0,
+  `rabatt` int(3) NOT NULL DEFAULT 0,
+  `sks_not_checked` int(1) NOT NULL DEFAULT 0,
+  `sks_kdnotiz` text NOT NULL DEFAULT '',
+  `updated_by` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_partner_typ_id` (`typ_id`),
   KEY `fk_partner_zahlziel_id` (`zahlziel_id`),
@@ -346,71 +351,71 @@ CREATE TABLE `partner` (
 
 CREATE TABLE `partnertyp` (
   `id` int(2) NOT NULL AUTO_INCREMENT,
-  `typ` varchar(15) NOT NULL,
+  `typ` varchar(15) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `passkeys` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `lastAuth` datetime NOT NULL,
-  `name` varchar(40) NOT NULL,
-  `userId` int(11) NOT NULL,
-  `credentialId` varchar(1023) NOT NULL,
-  `credentialPublicKey` text NOT NULL,
-  `signatureCounter` text NOT NULL,
-  `authKey` int(11) NOT NULL,
+  `lastAuth` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `name` varchar(40) NOT NULL DEFAULT '',
+  `userId` int(11) NOT NULL DEFAULT 0,
+  `credentialId` varchar(1023) NOT NULL DEFAULT '',
+  `credentialPublicKey` text NOT NULL DEFAULT '',
+  `signatureCounter` text NOT NULL DEFAULT '',
+  `authKey` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `project` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `name` varchar(150) NOT NULL,
-  `name2` varchar(150) NOT NULL,
-  `partner_id` int(11) NOT NULL,
-  `changetime` datetime NOT NULL,
-  `changeuser` int(11) NOT NULL,
-  `datetime` datetime NOT NULL,
-  `intro` text NOT NULL,
-  `outro` text NOT NULL,
+  `name` varchar(150) NOT NULL DEFAULT '',
+  `name2` varchar(150) NOT NULL DEFAULT '',
+  `partner_id` int(11) NOT NULL DEFAULT 0,
+  `changetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `changeuser` int(11) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `intro` text NOT NULL DEFAULT '',
+  `outro` text NOT NULL DEFAULT '',
   PRIMARY KEY (`id`),
   KEY `fek_proj_partner_id` (`partner_id`),
   CONSTRAINT `fek_proj_partner_id` FOREIGN KEY (`partner_id`) REFERENCES `partner` (`id`) ON UPDATE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `rechnr` (
-  `rechnr` int(11) NOT NULL,
-  `typ_id` int(5) NOT NULL,
+  `rechnr` int(11) NOT NULL DEFAULT 0,
+  `typ_id` int(5) NOT NULL DEFAULT 0,
   PRIMARY KEY (`rechnr`,`typ_id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `rechnung` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `adressfields` varchar(12) NOT NULL,
-  `anrede1` varchar(150) NOT NULL,
-  `anrede2` varchar(150) NOT NULL,
-  `partner_id` int(11) NOT NULL,
-  `mwst_id` int(3) NOT NULL,
-  `user_id` int(11) NOT NULL,
-  `typ_id` int(2) NOT NULL,
-  `zahlziel_id` int(3) NOT NULL,
-  `adresse_id` int(11) NOT NULL,
-  `wahrung_id` tinyint(3) NOT NULL,
-  `changetime` datetime NOT NULL,
-  `changeuser` int(11) NOT NULL,
-  `datetime` datetime NOT NULL,
-  `rechnr` int(11) NOT NULL,
-  `rabatt` int(3) NOT NULL,
-  `rabattdesc` varchar(100) NOT NULL,
-  `intro` text NOT NULL,
-  `outro` text NOT NULL,
-  `sks` tinyint(1) NOT NULL,
-  `sub_mwst` int(1) NOT NULL,
-  `kommission` int(11) NOT NULL,
-  `lieferdatum` varchar(100) NOT NULL,
-  `adresserweiterung` varchar(100) NOT NULL,
+  `adressfields` varchar(12) NOT NULL DEFAULT '',
+  `anrede1` varchar(150) NOT NULL DEFAULT '',
+  `anrede2` varchar(150) NOT NULL DEFAULT '',
+  `partner_id` int(11) NOT NULL DEFAULT 0,
+  `mwst_id` int(3) NOT NULL DEFAULT 0,
+  `user_id` int(11) NOT NULL DEFAULT 0,
+  `typ_id` int(2) NOT NULL DEFAULT 0,
+  `zahlziel_id` int(3) NOT NULL DEFAULT 0,
+  `adresse_id` int(11) NOT NULL DEFAULT 0,
+  `wahrung_id` tinyint(3) NOT NULL DEFAULT 0,
+  `changetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `changeuser` int(11) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `rechnr` int(11) NOT NULL DEFAULT 0,
+  `rabatt` int(3) NOT NULL DEFAULT 0,
+  `rabattdesc` varchar(100) NOT NULL DEFAULT '',
+  `intro` text NOT NULL DEFAULT '',
+  `outro` text NOT NULL DEFAULT '',
+  `sks` tinyint(1) NOT NULL DEFAULT 0,
+  `sub_mwst` int(1) NOT NULL DEFAULT 0,
+  `kommission` int(11) NOT NULL DEFAULT 0,
+  `lieferdatum` varchar(100) NOT NULL DEFAULT '',
+  `adresserweiterung` varchar(100) NOT NULL DEFAULT '',
   `storno` int(1) NOT NULL DEFAULT 0,
-  `stornodate` datetime NOT NULL,
-  `buchungsKto_id` int(11) NOT NULL,
+  `stornodate` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `buchungsKto_id` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fek_rech_partner_id` (`partner_id`),
   KEY `fek_rech_adresse_id` (`adresse_id`),
@@ -433,15 +438,15 @@ CREATE TABLE `rechnung` (
 
 CREATE TABLE `rechtyp` (
   `id` int(3) NOT NULL AUTO_INCREMENT,
-  `typ` varchar(20) NOT NULL,
+  `typ` varchar(20) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `setting` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `user_id` int(11) NOT NULL,
-  `opt` varchar(10) NOT NULL,
-  `val` text NOT NULL,
+  `user_id` int(11) NOT NULL DEFAULT 0,
+  `opt` varchar(10) NOT NULL DEFAULT '',
+  `val` text NOT NULL DEFAULT '',
   PRIMARY KEY (`id`),
   KEY `fk_settings_user_id` (`user_id`),
   CONSTRAINT `fk_settings_user_id` FOREIGN KEY (`user_id`) REFERENCES `user` (`id`) ON UPDATE CASCADE
@@ -449,8 +454,8 @@ CREATE TABLE `setting` (
 
 CREATE TABLE `strasse` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `str` varchar(50) NOT NULL,
-  `ort_id` int(11) NOT NULL,
+  `str` varchar(50) NOT NULL DEFAULT '',
+  `ort_id` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_str_ort_id` (`ort_id`),
   CONSTRAINT `fk_str_ort_id` FOREIGN KEY (`ort_id`) REFERENCES `ort` (`id`) ON UPDATE CASCADE
@@ -458,12 +463,12 @@ CREATE TABLE `strasse` (
 
 CREATE TABLE `tel` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `ort_id` int(11) NOT NULL,
-  `partner_id` int(11) NOT NULL,
-  `typ_id` int(3) NOT NULL,
-  `nr` varchar(20) NOT NULL,
-  `name` varchar(30) NOT NULL,
-  `adresse_id` int(11) NOT NULL,
+  `ort_id` int(11) NOT NULL DEFAULT 0,
+  `partner_id` int(11) NOT NULL DEFAULT 0,
+  `typ_id` int(3) NOT NULL DEFAULT 0,
+  `nr` varchar(20) NOT NULL DEFAULT '',
+  `name` varchar(30) NOT NULL DEFAULT '',
+  `adresse_id` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_tel_ort_id` (`ort_id`),
   KEY `fk_tel_typ_id` (`typ_id`),
@@ -475,29 +480,29 @@ CREATE TABLE `tel` (
 
 CREATE TABLE `teltyp` (
   `id` int(3) NOT NULL AUTO_INCREMENT,
-  `typ` varchar(20) NOT NULL,
+  `typ` varchar(20) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `termin` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `typ` int(2) NOT NULL,
-  `adresse_id` int(11) NOT NULL,
-  `text` text NOT NULL,
-  `changetime` datetime NOT NULL,
-  `done` tinyint(1) NOT NULL,
-  `user` int(11) NOT NULL,
-  `changeuser` int(11) NOT NULL,
-  `datetime` datetime NOT NULL,
-  `termtime` datetime NOT NULL,
-  `termdauer` time NOT NULL,
-  `followed_by` int(11) NOT NULL,
-  `act_date` datetime NOT NULL,
-  `head` varchar(100) NOT NULL,
-  `main_id` int(11) NOT NULL,
-  `user2` int(11) NOT NULL,
-  `user3` int(11) NOT NULL,
-  `user4` int(11) NOT NULL,
+  `typ` int(2) NOT NULL DEFAULT 0,
+  `adresse_id` int(11) NOT NULL DEFAULT 0,
+  `text` text NOT NULL DEFAULT '',
+  `changetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `done` tinyint(1) NOT NULL DEFAULT 0,
+  `user` int(11) NOT NULL DEFAULT 0,
+  `changeuser` int(11) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `termtime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `termdauer` time NOT NULL DEFAULT '00:00:00',
+  `followed_by` int(11) NOT NULL DEFAULT 0,
+  `act_date` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `head` varchar(100) NOT NULL DEFAULT '',
+  `main_id` int(11) NOT NULL DEFAULT 0,
+  `user2` int(11) NOT NULL DEFAULT 0,
+  `user3` int(11) NOT NULL DEFAULT 0,
+  `user4` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_termin_typ_termtyp_id` (`typ`),
   CONSTRAINT `fk_termin_typ_termtyp_id` FOREIGN KEY (`typ`) REFERENCES `termtyp` (`id`) ON UPDATE CASCADE
@@ -505,33 +510,33 @@ CREATE TABLE `termin` (
 
 CREATE TABLE `termtyp` (
   `id` int(2) NOT NULL AUTO_INCREMENT,
-  `typ` varchar(20) NOT NULL,
+  `typ` varchar(20) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `titel` (
   `id` int(5) NOT NULL AUTO_INCREMENT,
-  `titel` varchar(50) NOT NULL,
-  `datetime` datetime NOT NULL,
+  `titel` varchar(50) NOT NULL DEFAULT '',
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `tmp_artikel` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `bezeichn` varchar(150) NOT NULL,
-  `typ_id` int(5) NOT NULL,
-  `einheit_id` int(11) NOT NULL,
+  `bezeichn` varchar(150) NOT NULL DEFAULT '',
+  `typ_id` int(5) NOT NULL DEFAULT 0,
+  `einheit_id` int(11) NOT NULL DEFAULT 0,
   `preis` decimal(10,2) DEFAULT NULL,
-  `datetime` datetime NOT NULL,
-  `posnr` int(5) NOT NULL,
-  `rabatt` int(3) NOT NULL,
-  `rabatttyp` int(2) NOT NULL,
-  `menge` decimal(6,3) NOT NULL,
-  `angtyp` int(1) NOT NULL,
-  `mwst_id` int(3) NOT NULL,
-  `rech_id` int(11) NOT NULL,
-  `wanr` varchar(100) NOT NULL,
-  `pagebreak` int(1) NOT NULL,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `posnr` int(5) NOT NULL DEFAULT 0,
+  `rabatt` int(3) NOT NULL DEFAULT 0,
+  `rabatttyp` int(2) NOT NULL DEFAULT 0,
+  `menge` decimal(6,3) NOT NULL DEFAULT 0,
+  `angtyp` int(1) NOT NULL DEFAULT 0,
+  `mwst_id` int(3) NOT NULL DEFAULT 0,
+  `rech_id` int(11) NOT NULL DEFAULT 0,
+  `wanr` varchar(100) NOT NULL DEFAULT '',
+  `pagebreak` int(1) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_tmp_artikel_typ_id` (`typ_id`),
   KEY `fk_tmp_art_mwst_id` (`mwst_id`),
@@ -545,12 +550,12 @@ CREATE TABLE `tmp_artikel` (
 
 CREATE TABLE `tmp_eigensch` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `bezeichn` varchar(100) NOT NULL,
-  `wert` varchar(50) NOT NULL,
-  `einheit_id` int(11) NOT NULL,
-  `art_id` int(11) NOT NULL,
-  `datetime` datetime NOT NULL,
-  `posnr` int(5) NOT NULL,
+  `bezeichn` varchar(100) NOT NULL DEFAULT '',
+  `wert` varchar(50) NOT NULL DEFAULT '',
+  `einheit_id` int(11) NOT NULL DEFAULT 0,
+  `art_id` int(11) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `posnr` int(5) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_tmp_eigensch_art_id` (`art_id`),
   KEY `fk_tmp_eigensch_einheit_id` (`einheit_id`),
@@ -560,28 +565,28 @@ CREATE TABLE `tmp_eigensch` (
 
 CREATE TABLE `tmp_rechnung` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `adressfields` varchar(12) NOT NULL,
-  `partner_id` int(11) NOT NULL,
-  `anrede1` varchar(150) NOT NULL,
-  `anrede2` varchar(150) NOT NULL,
-  `mwst_id` int(3) NOT NULL,
-  `user_id` int(11) NOT NULL,
-  `rechnr` int(11) NOT NULL,
-  `typ_id` int(2) NOT NULL,
-  `zahlziel_id` int(3) NOT NULL,
-  `adresse_id` int(11) NOT NULL,
-  `wahrung_id` tinyint(3) NOT NULL,
-  `datetime` datetime NOT NULL,
-  `rabatt` int(3) NOT NULL,
-  `rabattdesc` varchar(100) NOT NULL,
-  `intro` text NOT NULL,
-  `outro` text NOT NULL,
-  `sub_mwst` int(1) NOT NULL,
-  `kommission` int(11) NOT NULL,
-  `lieferdatum` varchar(100) NOT NULL,
-  `adresserweiterung` varchar(100) NOT NULL,
+  `adressfields` varchar(12) NOT NULL DEFAULT '',
+  `partner_id` int(11) NOT NULL DEFAULT 0,
+  `anrede1` varchar(150) NOT NULL DEFAULT '',
+  `anrede2` varchar(150) NOT NULL DEFAULT '',
+  `mwst_id` int(3) NOT NULL DEFAULT 0,
+  `user_id` int(11) NOT NULL DEFAULT 0,
+  `rechnr` int(11) NOT NULL DEFAULT 0,
+  `typ_id` int(2) NOT NULL DEFAULT 0,
+  `zahlziel_id` int(3) NOT NULL DEFAULT 0,
+  `adresse_id` int(11) NOT NULL DEFAULT 0,
+  `wahrung_id` tinyint(3) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `rabatt` int(3) NOT NULL DEFAULT 0,
+  `rabattdesc` varchar(100) NOT NULL DEFAULT '',
+  `intro` text NOT NULL DEFAULT '',
+  `outro` text NOT NULL DEFAULT '',
+  `sub_mwst` int(1) NOT NULL DEFAULT 0,
+  `kommission` int(11) NOT NULL DEFAULT 0,
+  `lieferdatum` varchar(100) NOT NULL DEFAULT '',
+  `adresserweiterung` varchar(100) NOT NULL DEFAULT '',
   `storno` int(1) NOT NULL DEFAULT 0,
-  `buchungsKto_id` int(11) NOT NULL,
+  `buchungsKto_id` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_tmp_rech_partner_id` (`partner_id`),
   KEY `fk_tmp_rech_adresse_id` (`adresse_id`),
@@ -603,49 +608,49 @@ CREATE TABLE `tmp_rechnung` (
 
 CREATE TABLE `user` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `vname` varchar(50) NOT NULL,
-  `nname` varchar(50) NOT NULL,
-  `nick` varchar(50) NOT NULL,
-  `pass` varchar(150) NOT NULL,
-  `mail` varchar(50) NOT NULL,
-  `salt` varchar(50) NOT NULL,
-  `tel_priv` varchar(30) NOT NULL,
-  `tel_gesch` varchar(30) NOT NULL,
-  `tel_mobil` varchar(30) NOT NULL,
-  `lastlogin` datetime NOT NULL,
-  `numlogins` int(11) NOT NULL,
-  `logedout` tinyint(2) NOT NULL,
-  `wrongpw` tinyint(3) NOT NULL,
-  `notizen` text NOT NULL,
-  `blocked` tinyint(1) NOT NULL,
-  `rights` varchar(6) NOT NULL,
-  `weekly_hours` int(11) NOT NULL,
-  `rfid` varchar(10) NOT NULL,
-  `color` varchar(8) NOT NULL,
-  `weekhours` decimal(6,3) NOT NULL,
-  `vacationdays` int(4) NOT NULL,
-  `sahours` decimal(3,1) NOT NULL,
-  `timelog_start` date NOT NULL,
+  `vname` varchar(50) NOT NULL DEFAULT '',
+  `nname` varchar(50) NOT NULL DEFAULT '',
+  `nick` varchar(50) NOT NULL DEFAULT '',
+  `pass` varchar(150) NOT NULL DEFAULT '',
+  `mail` varchar(50) NOT NULL DEFAULT '',
+  `salt` varchar(50) NOT NULL DEFAULT '',
+  `tel_priv` varchar(30) NOT NULL DEFAULT '',
+  `tel_gesch` varchar(30) NOT NULL DEFAULT '',
+  `tel_mobil` varchar(30) NOT NULL DEFAULT '',
+  `lastlogin` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `numlogins` int(11) NOT NULL DEFAULT 0,
+  `logedout` tinyint(2) NOT NULL DEFAULT 0,
+  `wrongpw` tinyint(3) NOT NULL DEFAULT 0,
+  `notizen` text NOT NULL DEFAULT '',
+  `blocked` tinyint(1) NOT NULL DEFAULT 0,
+  `rights` varchar(6) NOT NULL DEFAULT '',
+  `weekly_hours` int(11) NOT NULL DEFAULT 0,
+  `rfid` varchar(10) NOT NULL DEFAULT '',
+  `color` varchar(8) NOT NULL DEFAULT '',
+  `weekhours` decimal(6,3) NOT NULL DEFAULT 0,
+  `vacationdays` int(4) NOT NULL DEFAULT 0,
+  `sahours` decimal(3,1) NOT NULL DEFAULT 0,
+  `timelog_start` date NOT NULL DEFAULT '0000-00-00',
   PRIMARY KEY (`id`),
   UNIQUE KEY `nick` (`nick`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `wahrung` (
   `id` tinyint(3) NOT NULL AUTO_INCREMENT,
-  `wahrung` varchar(20) NOT NULL,
+  `wahrung` varchar(20) NOT NULL DEFAULT '',
   `kurs` decimal(8,4) DEFAULT NULL,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `work` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `bezeichn` varchar(150) NOT NULL,
-  `bezeichn2` varchar(150) NOT NULL,
-  `project_id` int(11) NOT NULL,
-  `changetime` datetime NOT NULL,
-  `changeuser` int(11) NOT NULL,
-  `datetime` datetime NOT NULL,
-  `std` decimal(6,3) NOT NULL,
+  `bezeichn` varchar(150) NOT NULL DEFAULT '',
+  `bezeichn2` varchar(150) NOT NULL DEFAULT '',
+  `project_id` int(11) NOT NULL DEFAULT 0,
+  `changetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `changeuser` int(11) NOT NULL DEFAULT 0,
+  `datetime` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `std` decimal(6,3) NOT NULL DEFAULT 0,
   `rechn` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fek_work_partner_id` (`project_id`),
@@ -654,16 +659,16 @@ CREATE TABLE `work` (
 
 CREATE TABLE `zahlziel` (
   `id` int(3) NOT NULL AUTO_INCREMENT,
-  `ziel` varchar(150) NOT NULL,
+  `ziel` varchar(150) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE `zeiten` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `ma_id` int(11) NOT NULL,
-  `kommen` datetime NOT NULL,
-  `gehen` datetime NOT NULL,
-  `pause_mins` int(11) NOT NULL,
+  `ma_id` int(11) NOT NULL DEFAULT 0,
+  `kommen` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `gehen` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
+  `pause_mins` int(11) NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`),
   KEY `fk_zeiten_user_id` (`ma_id`),
   CONSTRAINT `fk_zeiten_user_id` FOREIGN KEY (`ma_id`) REFERENCES `user` (`id`) ON UPDATE CASCADE