set echo on;

alter session set nls_language = english;
alter session set nls_date_format = 'DD-MON-YYYY';
alter session set nls_date_language = english;

create table FLUGHAFEN (
FHC		varchar(3),
LAND		varchar(3),
STADT		varchar(50) default null,
NAME		varchar(50) default null,
constraint FLUGHAFEN_PS
		primary key (FHC)
);

create table FLUGLINIE (
FLC		varchar(2),
LAND		varchar(3),
HUB		varchar(3)  default null,
NAME		varchar(30) default null,
ALLIANZ		varchar(20) default null,
constraint FLUGLINIE_LAND_NN
		check (LAND is not null),
constraint FLUGLINIE_ALLIANZ_CHK
		check (ALLIANZ in ('Star','Excellence','Leftover','OneWorld','SkyTeam')),
constraint FLUGLINIE_PS
		primary key (FLC),
constraint FLUGLINIE_FS_HUB
		foreign key (HUB) references FLUGHAFEN(FHC)
)
HORIZONTAL (FLC('KK','MM'));

create table FLUG (
FNR             integer,
FLC		varchar(2),
FLNR		integer,		
VON		varchar(3),
NACH		varchar(3),
AB		integer,
AN		integer,
constraint FLUG_VON_NN
		check (VON is not null),
constraint FLUG_NACH_NN
		check (NACH is not null),
constraint FLUG_AB_NN
		check (AB is not null),
constraint FLUG_AN_NN
		check (AN is not null),
constraint FLUG_AB_CHK
		check (AB between 0 and 2400),
constraint FLUG_AN_CHK
		check (AN between 0 and 2400),
constraint FLUG_VONNACH_CHK
		check (VON != NACH),
constraint FLUG_PS
		primary key (FNR),
constraint FLUG_FS_FLC
		foreign key (FLC) references FLUGLINIE(FLC),
constraint FLUG_FS_VON
		foreign key (VON) references FLUGHAFEN(FHC),
constraint FLUG_FS_NACH
		foreign key (NACH) references FLUGHAFEN(FHC)
)
HORIZONTAL (FLC('KK','MM'));;


create table PASSAGIER (
PNR		integer,
NAME		varchar(40),
VORNAME		varchar(40) default null,		
LAND		varchar(3)  default null,
GEBORT          varchar(50) default null,
GEBDAT          varchar(20) default null,
GEBDATINT       integer     default null,        
constraint PASSAGIER_NAME_NN
                check (NAME is not null),
constraint PASSAGIER_GEBDATINT_CHK
                check (GEBDATINT > 0),
constraint PASSAGIER_PS
		primary key (PNR)
)
HORIZONTAL (GEBDATINT(17000,25000));
;


create table BUCHUNG (
BNR             integer,
PNR		integer,
FLC		varchar(2),
FLNR		integer,		
VON		varchar(3),
NACH		varchar(3),
TAG		varchar(20),
MEILEN          integer,
PREIS           integer,
TAGINT		integer     default null,
constraint BUCHUNG_NACH_NN
		check (NACH is not null),
constraint BUCHUNG_MEILEN_NN
		check (MEILEN is not null),
constraint BUCHUNG_PREIS_NN
		check (PREIS is not null),
constraint BUCHUNG_MEILEN_CHK
                check (MEILEN >= 0),
constraint BUCHUNG_PREIS_CHK
                check (PREIS > 0),
constraint BUCHUNG_TAGINT_CHK
                check (TAGINT > 0),
constraint BUCHUNG_PS
		primary key (BNR),
constraint BUCHUNG_FS_PNR
		foreign key (PNR) references PASSAGIER(PNR),
constraint BUCHUNG_FS_FLC
		foreign key (FLC) references FLUGLINIE(FLC),
constraint BUCHUNG_FS_VON
		foreign key (VON) references FLUGHAFEN(FHC),
constraint BUCHUNG_FS_NACH
		foreign key (NACH) references FLUGHAFEN(FHC)
)
HORIZONTAL (FLC('KK','MM'));