Batasan untuk mencegah pelanggaran batasan FK di tabel ketiga

Saya pikir Anda solId adalah untuk solitications . Saya awalnya mengira itu berarti padat (seperti batu). Jadi, ini bisa dilakukan melalui komposisi.

Perhatikan bahwa ada beberapa kesalahan ketik dalam skema yang disediakan. Beberapa koma hilang, beberapa nama indeks ditipu. Tabel MyISAM diubah menjadi INNODB. Jadi saya melakukan beberapa penggantian nama. Juga, di sekitar table5 ada tabel yang hilang. Jadi skrip Anda tidak akan berjalan (untuk tabel rfqs ).

Demikian pula, skema berikut akan gagal karena tabel Anda hilang, sekitar 60 hingga 70 persen melewatinya.

Tabel sejauh ini:

create schema slipper;
use slipper;

CREATE TABLE `nsns` (
  `ID` int(11) NOT NULL AUTO_INCREMENT,
  `NSN` char(16) NOT NULL,
  `Description` varchar(100) DEFAULT NULL,
  `ShortDesc` varchar(20) DEFAULT NULL,
  PRIMARY KEY (`ID`),
  UNIQUE KEY `NSN_UNIQUE` (`NSN`)
) ENGINE=InnoDB AUTO_INCREMENT=42 DEFAULT CHARSET=latin7;

drop table if exists `solicitations`;
CREATE TABLE `solicitations` (
  `ID` int(11) NOT NULL AUTO_INCREMENT,
  `NSNId` int(11) NOT NULL,
  `UOMId` int(11) NOT NULL DEFAULT '1',
  `QUPId` int(11) NOT NULL DEFAULT '0',
  `SolicitationNo` char(16) NOT NULL,
  `Quantity` int(11) NOT NULL,
  `ReturnByDate` date NOT NULL,
  `StatusId` int(11) NOT NULL DEFAULT '1',
  `Memo` text,
  PRIMARY KEY (`ID`),
  UNIQUE KEY `SolicitationNo_UNIQUE` (`SolicitationNo`),
  KEY `NSN_idx1111` (`NSNId`),
  KEY `NSN_idx1112` (`ID`,`NSNId`), -- atm an necessary evil. Revisit, perhaps collapse one
  CONSTRAINT `NSNId` FOREIGN KEY (`NSNId`) REFERENCES `nsns` (`ID`)
) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=latin7;

drop table if exists `parts`;
CREATE TABLE `parts` (
  `ID` int(11) NOT NULL AUTO_INCREMENT,
  `NSNId` int(11) NOT NULL,
  `VendorId` int(11) NOT NULL,
  `UOMId` int(11) NOT NULL DEFAULT '1',
  `QUPId` int(11) NOT NULL DEFAULT '1',
  `StatusId` int(11) DEFAULT '1',
  `PartNo` varchar(45) DEFAULT NULL,
  `Memo` text,
  PRIMARY KEY (`ID`),
  KEY `NSN_idx2222` (`NSNId`),
  KEY `NSN_idx2223` (`ID`,`NSNId`), -- atm an necessary evil. Revisit, perhaps collapse one
  CONSTRAINT `NSNId2222` FOREIGN KEY (`NSNId`) REFERENCES `nsns` (`ID`)
) ENGINE=InnoDB AUTO_INCREMENT=18 DEFAULT CHARSET=latin7;

drop table if exists `baserfqs`;
CREATE TABLE `baserfqs` (
  `ID` int(11) NOT NULL AUTO_INCREMENT,
  `NSNId` int(11) NOT NULL,
  `BRFQNo` varchar(45) DEFAULT NULL,
  `Memo` text,
  `Finalized` bit(1) NOT NULL DEFAULT b'0',
  PRIMARY KEY (`ID`),
  UNIQUE KEY `BRFQNo_UNIQUE` (`BRFQNo`),
  KEY `NSN_idx4444` (`NSNId`),
  KEY `NSN_idx4445` (`ID`,`NSNId`), -- atm an necessary evil. Revisit, perhaps collapse one
  CONSTRAINT `NSNId4444` FOREIGN KEY (`NSNId`) REFERENCES `nsns` (`ID`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=latin7;

CREATE TABLE `rfqs` (
  `ID` int(11) NOT NULL AUTO_INCREMENT,
  `BaseRFQId` int(11) NOT NULL,
  `VendorId` int(11) NOT NULL,
  `RFQNo` varchar(45) NOT NULL,
  `StatusId` int(11) NOT NULL DEFAULT '6',
  `DateSent` date DEFAULT NULL,
  `DateResponded` date DEFAULT NULL,
  `VendorNotes` text,
  `QuotedBy` varchar(45) DEFAULT NULL,
  `Title` varchar(45) DEFAULT NULL,
  `ValidityCodeId` int(11) DEFAULT '4',
  `UnitWt` decimal(10,3) DEFAULT NULL,
  `WtUOMId` int(11) DEFAULT '1',
  PRIMARY KEY (`ID`),
  UNIQUE KEY `RFQNo_UNIQUE` (`RFQNo`),
  KEY `BaseRFQId_idx` (`BaseRFQId`),
  KEY `VendorId_idx` (`VendorId`),
  KEY `StatusId_idx` (`StatusId`),
  KEY `ValidityCodeId_idx` (`ValidityCodeId`),
  KEY `WtUOMId_idx` (`WtUOMId`),
  CONSTRAINT `WtUOMId` FOREIGN KEY (`WtUOMId`) REFERENCES `wtuoms` (`ID`),
  CONSTRAINT `BaseRFQId` FOREIGN KEY (`BaseRFQId`) REFERENCES `baserfqs` (`ID`),
  CONSTRAINT `StatusId` FOREIGN KEY (`StatusId`) REFERENCES `rfqstatus` (`ID`),
  CONSTRAINT `ValidityCodeId` FOREIGN KEY (`ValidityCodeId`) REFERENCES `validitycodes` (`ID`),
  CONSTRAINT `VendorId` FOREIGN KEY (`VendorId`) REFERENCES `vendors` (`ID`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=latin7;


drop table if exists `compTableX001`;
CREATE TABLE `compTableX001`
(  -- a composition table for FK's in `baserfqssols`
  `ID` int(11) AUTO_INCREMENT PRIMARY KEY,
  `BaseRFQId` int(11) NOT NULL,     -- baserfqs.ID
  `SolId` int(11) NOT NULL,         -- solicitations.ID
  `NSNId` int(11) NOT NULL,
  unique key (`BaseRFQId`,`SolId`), -- no dupes allowed  
  CONSTRAINT `tx001_base` FOREIGN KEY (`BaseRFQId`,`NSNId`) REFERENCES `baserfqs` (`ID`,`NSNId`),
  CONSTRAINT `tx001_sol` FOREIGN KEY (`SolId`,`NSNId`) REFERENCES `solicitations` (`ID`,`NSNId`)
) ENGINE=InnoDB DEFAULT CHARSET=latin7; 

drop table if exists `compTableX002`;
CREATE TABLE `compTableX002`
(  -- a composition table for FK's in `rfqssolsparts`
  `ID` int(11) AUTO_INCREMENT PRIMARY KEY,
  `BaseRFQId` int(11) NOT NULL,     -- baserfqs.ID
  `SolId` int(11) NOT NULL,         -- solicitations.ID
  `PartId` int(11) NOT NULL,        -- parts.ID
  `NSNId` int(11) NOT NULL,
  unique key (`BaseRFQId`,`SolId`,`PartId`), -- no dupes allowed 
  CONSTRAINT `tx002_base` FOREIGN KEY (`BaseRFQId`,`NSNId`) REFERENCES `baserfqs` (`ID`,`NSNId`),
  CONSTRAINT `tx002_sol` FOREIGN KEY (`SolId`,`NSNId`) REFERENCES `solicitations` (`ID`,`NSNId`),
  CONSTRAINT `tx002_part` FOREIGN KEY (`PartId`,`NSNId`) REFERENCES `parts` (`ID`,`NSNId`)
) ENGINE=InnoDB DEFAULT CHARSET=latin7; 

drop table if exists `baserfqssols`;
CREATE TABLE `baserfqssols` (
  `ID` int(11) auto_increment,
  `compId` int(11) NOT NULL,    -- composition ID `compTableX001`.`ID`
  `LineItemNo` int(11) NOT NULL DEFAULT '1',
  PRIMARY KEY (`ID`),
  CONSTRAINT `basesol_compX001` FOREIGN KEY (`compId`) REFERENCES `compTableX001` (`ID`)
) ENGINE=InnoDB DEFAULT CHARSET=latin7; -- changed engine type

-- Is it possible to set up a foreign key constraint on RFQsSolsParts that requires SolId and PartId to reference records
-- that have the same NSNId, and requires RFQId to reference a BaseRFQId which has the same NSNId as the other two?

drop table if exists `rfqssolsparts`;
CREATE TABLE `rfqssolsparts` (
  -- `RFQId` int(11) NOT NULL,      -- requirement BBBBBBBBBBBBB
  -- `SolId` int(11) NOT NULL,      -- requirement AAAAAAAAA
  -- `PartId` int(11) NOT NULL,     -- requirement AAAAAAAAA
  `ID` int(11) auto_increment,
  `compId` int(11) NOT NULL, -- composition ID `compTableX002`.`ID`
  `CondId` int(11) NOT NULL,
  `UOMId` int(11) NOT NULL DEFAULT '1',
  `QUPId` int(11) NOT NULL DEFAULT '1',
  `UnitPrice` decimal(10,3) NOT NULL,
  `LeadTime` int(11) DEFAULT NULL,
  `LTCId` int(11) DEFAULT NULL,
  `SplsNSNId` int(11) DEFAULT NULL,
  `SetupCostInc` bit(1) NOT NULL DEFAULT b'0',
  `CertCostInc` bit(1) NOT NULL DEFAULT b'0',
  `MfgCerts` bit(1) NOT NULL DEFAULT b'0',
  `Altered` bit(1) NOT NULL DEFAULT b'0',
  `OrigPkg` bit(1) NOT NULL DEFAULT b'1',
  `SplsContNo` varchar(45) DEFAULT NULL,
  `SplsDate` date DEFAULT NULL,
  -- PRIMARY KEY (`RFQId`,`SolId`,`PartId`) 
  PRIMARY KEY (`ID`),
  CONSTRAINT `triplet_compX002` FOREIGN KEY (`compId`) REFERENCES `compTableX002` (`ID`)
) ENGINE=InnoDB DEFAULT CHARSET=latin7;

compTableX001 seperti hierarki mini TwoParents-OneChild dengan nama ID . Jadi ID adalah nama orang tua. Ia memiliki dua orang tua(BaseRFQId dan SolId ), dan satu anak (NSNId ). Nama atau pengenal, sebagai ID , adalah target FK dari baserfqssols baris yang didukungnya. Direferensikan dan Mereferensi , masing-masing.

Demikian pula, compTableX002 tampaknya menyelesaikan kondisi sekarang untuk Pertanyaan 2.

pembersihan:

drop schema slipper;