Error starting at line 1 in command:
Create Table Hotel
(Hotel_No Char(4 Byte) Not Null,
H_Name VarChar2(20 Byte) Not Null,
H_Address VarChar2(30 Byte),
Constraint Hotel_PK Primary Key (Hotel_No))
Error at Command Line:1 Column:13
Error report:
SQL Error: ORA-00955: name is already used by an existing object
00955. 00000 -  "name is already used by an existing object"
*Cause:    
*Action:

Error starting at line 7 in command:
Create Table Room
(Room_No VarChar2(4) Not Null,
Hotel_No Char(4) Not Null,
R_Type Char(1),
R_Price Number(5,2),
Constraint Room_PK Primary Key (Room_No, Hotel_No),
Constraint Hotel_No_FK (Hotel_No) References Hotel(Hotel_No))
Error at Command Line:13 Column:23
Error report:
SQL Error: ORA-00904: : invalid identifier
00904. 00000 -  "%s: invalid identifier"
*Cause:    
*Action:
Error starting at line 15 in command:
Create Table Booking
(Hotel_No Char(4) Not Null,
Guest_No Char(4) Not Null,
Date_From Date Not Null,
Date_To Date,
Room_No VarChar2(4),
Constraint Booking_PK Primary Key (Hotel_No, Guest_No, Date_From),
Constraint Guest_No_FK Foreign Key (Guest_No) References Guest(Guest_No), 
Constraint Hotel_No_Room_No_FK (Hotel_No, Room_No) References Room(Hotel_No, Room_No),
Constraint Hotel_No_FK (Hotel_No) References Hotel(Hotel_No))
Error at Command Line:23 Column:31
Error report:
SQL Error: ORA-00904: : invalid identifier
00904. 00000 -  "%s: invalid identifier"
*Cause:    
*Action:

Error starting at line 26 in command:
Create Table Guest
(Guest_No Char(4) Not Null,
G_Name VarChar2(30),
G_Address VarChar2(35),
Constraint Guest_PK Primary Key (Guest_No))
Error at Command Line:26 Column:13
Error report:
SQL Error: ORA-00955: name is already used by an existing object
00955. 00000 -  "name is already used by an existing object"
*Cause:    
*Action: