CREATE TABLE News (
    NID INT NOT NULL AUTO_INCREMENT,
    PRIMARY KEY (NID),
    Content VARCHAR(255) NOT NULL,
    Teaser VARCHAR(255) NOT NULL,
    StartDate DATE NOT NULL,
    EndDate DATE,
	INDEX (Content,EndDate)
);

CREATE TABLE Events (
    EID INT NOT NULL AUTO_INCREMENT,
    PRIMARY KEY (EID),
    ETitle VARCHAR(255) NOT NULL,
    EDate VARCHAR(255) NOT NULL,
    EUrl VARCHAR(255),
	INDEX (ETitle,EUrl,EDate)
);
'''Changed Date to VARCHAR due to irregularities in time span'''

CREATE TABLE Organisation (
    OID INT NOT NULL AUTO_INCREMENT,
	PRIMARY KEY (OID),
    OName VARCHAR(255) NOT NULL,
    ODescription VARCHAR(255),
    OUrl VARCHAR(255),
    OContact INT,
	INDEX (OName,ODescription,OUrl,OContact)
);
CREATE TABLE Location (
    LID INT NOT NULL AUTO_INCREMENT,
	PRIMARY KEY (LID),
    LTitle VARCHAR(64),
    LStreetNr VARCHAR(128),
    LPostalCode1 VARCHAR(16),
    LPostalCode2 VARCHAR(16),
    LCity1 VARCHAR(32),
    LCity2 VARCHAR(32),
    POBox VARCHAR(16),
    LCountry VARCHAR(64),
    LLon VARCHAR(8),
    LLat VARCHAR(8),
    INDEX (LTitle,LStreetNr,LPostalCode1,LPostalCode2,LCity1,LCity2,LCountry)
);
CREATE TABLE Tag (
    TID INT NOT NULL AUTO_INCREMENT,
    TagName VARCHAR(64) NOT NULL,
    TagDescription VARCHAR(255),
    PRIMARY KEY (TID)
);
CREATE TABLE KnowHowBackground (
    KNID INT NOT NULL AUTO_INCREMENT,
	KNTitle VARCHAR(64) NOT NULL,
	KNContent VARCHAR(255),
	KNAbstract VARCHAR(255) NOT NULL,
	KNUrl VARCHAR(255),
    PRIMARY KEY (KNID)
);
CREATE TABLE EventsKategorie (
    EKID INT NOT NULL AUTO_INCREMENT,
	EKName VARCHAR(64) NOT NULL,
	EKDescription VARCHAR(255),
    PRIMARY KEY (EKID)
);
CREATE TABLE NewsKategorie (
    NKID INT NOT NULL AUTO_INCREMENT,
	NKName VARCHAR(64) NOT NULL,
	NKDescription VARCHAR(255),
    PRIMARY KEY (NKID)
);
CREATE TABLE ChannelKategorie (
    CKID INT NOT NULL AUTO_INCREMENT,
	CKName VARCHAR(64) NOT NULL,
	CKDescription VARCHAR(255),
    PRIMARY KEY (CKID)
);
CREATE TABLE News_NewsKategorie (
    NNKID INT NOT NULL AUTO_INCREMENT,
	FK_NID INT NOT NULL,
	FK_NKID INT NOT NULL,
    PRIMARY KEY (NNKID),
    CONSTRAINT FK_NID1 FOREIGN KEY (FK_NID) REFERENCES News(NID) ON DELETE CASCADE ON UPDATE CASCADE,
    CONSTRAINT FK_NKID1 FOREIGN KEY (FK_NKID) REFERENCES NewsKategorie(NKID) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE News_ChannelKategorie (
    NCKID INT NOT NULL AUTO_INCREMENT,
	FK_NID INT NOT NULL,
	FK_CKID INT NOT NULL,
    PRIMARY KEY (NCKID),
    FOREIGN KEY (FK_NID) REFERENCES News(NID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_CKID) REFERENCES ChannelKategorie(CKID) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE News_Tag (
    TNID INT NOT NULL AUTO_INCREMENT,
	FK_NID INT NOT NULL,
	FK_TID INT NOT NULL,
    PRIMARY KEY (TNID),
    FOREIGN KEY (FK_NID) REFERENCES News(NID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_TID) REFERENCES Tag(TID) ON DELETE CASCADE ON UPDATE CASCADE  
);
CREATE TABLE News_Events (
    NEID INT NOT NULL AUTO_INCREMENT,
	FK_NID INT NOT NULL,
	FK_EID INT NOT NULL,
    PRIMARY KEY (NEID),
    FOREIGN KEY (FK_NID) REFERENCES News(NID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_EID) REFERENCES Events(EID) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE News_Organisation (
    NOID INT NOT NULL AUTO_INCREMENT,
	FK_NID INT NOT NULL,
	FK_OID INT NOT NULL,
    PRIMARY KEY (NOID),
    FOREIGN KEY (FK_NID) REFERENCES News(NID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_OID) REFERENCES Organisation(OID) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE Organisation_NewsKategorie (
    ONKID INT NOT NULL AUTO_INCREMENT,
	FK_NKID INT NOT NULL,
	FK_OID INT NOT NULL,
    PRIMARY KEY (ONKID),
    FOREIGN KEY (FK_NKID) REFERENCES NewsKategorie(NKID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_OID) REFERENCES Organisation(OID) ON DELETE CASCADE ON UPDATE CASCADE
); 
CREATE TABLE Organisation_Location (
    OLID INT NOT NULL AUTO_INCREMENT,
	FK_LID INT NOT NULL,
	FK_OID INT NOT NULL,
    PRIMARY KEY (OLID),
    FOREIGN KEY (FK_LID) REFERENCES Location(LID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_OID) REFERENCES Organisation(OID) ON DELETE CASCADE ON UPDATE CASCADE
); 
CREATE TABLE Organisation_KnowHowBackground (
    OKNID INT NOT NULL AUTO_INCREMENT,
	FK_KNID INT NOT NULL,
	FK_OID INT NOT NULL,
    PRIMARY KEY (OKNID),
    FOREIGN KEY (FK_KNID) REFERENCES KnowHowBackground(KNID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_OID) REFERENCES Organisation(OID) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE Organisation_Tag (
    OTID INT NOT NULL AUTO_INCREMENT,
	FK_TID INT NOT NULL,
	FK_OID INT NOT NULL,
    PRIMARY KEY (OTID),
    FOREIGN KEY (FK_TID) REFERENCES Tag(TID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_OID) REFERENCES Organisation(OID) ON DELETE CASCADE ON UPDATE CASCADE
); 
CREATE TABLE Organisation_Events (
    OEID INT NOT NULL AUTO_INCREMENT,
	FK_EID INT NOT NULL,
	FK_OID INT NOT NULL,
    PRIMARY KEY (OEID),
    FOREIGN KEY (FK_EID) REFERENCES Events(EID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_OID) REFERENCES Organisation(OID) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE Events_Tag (
    ETID INT NOT NULL AUTO_INCREMENT,
	FK_TID INT NOT NULL,
	FK_EID INT NOT NULL,
    PRIMARY KEY (ETID),
    FOREIGN KEY (FK_TID) REFERENCES Tag(TID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_EID) REFERENCES Events(EID) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE Events_Location (
    ELID INT NOT NULL AUTO_INCREMENT,
	FK_EID INT NOT NULL,
	FK_LID INT NOT NULL,
    PRIMARY KEY (ELID),
    FOREIGN KEY (FK_EID) REFERENCES Events(EID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_LID) REFERENCES Location(LID) ON DELETE CASCADE ON UPDATE CASCADE
); 
CREATE TABLE Events_EventsKategorie (
    EEKID INT NOT NULL AUTO_INCREMENT,
	FK_EID INT NOT NULL,
	FK_EKID INT NOT NULL,
    PRIMARY KEY (EEKID),
    FOREIGN KEY (FK_EID) REFERENCES Events(EID) ON DELETE CASCADE ON UPDATE CASCADE,
    FOREIGN KEY (FK_EKID) REFERENCES EventsKategorie(EKID) ON DELETE CASCADE ON UPDATE CASCADE
);