Let me i see if u can solve this

Question

hi
someone had send to me this letter and i did not know how to solve it could anyone help me
i whant to select(cname,secno,lecname,time_name,room_name) where
available_course='655455'
can u give me all the select statement
the tables r:
hint:=course MUST BE IN Available_course;
Create Table Course
Cno                    varchar2 ( 7 )          Not Null ,
Cname               varchar2 ( 50 )          Not Null ,
Credit_Hours number ( 3 )          Not Null ,
Constraint Course_PK Primary Key (Cno)
Create Table Day
Dno          varchar2 ( 1 )     Not Null ,
Dname      varchar2 ( 15 ) Not Null ,
Constraint Day_Pk Primary Key (Dno)
Create Table Lecturer
Lecno varchar2 ( 10 ) Not Null ,
Lname varchar2 ( 30 ) Not Null ,
PHD varchar2 (30) ,
Constraint Lecturer_Pk Primary Key (Lecno)
create table Time
Time_no varchar2 ( 3 ) Not Null ,
Time_name varchar2 ( 15 ) Not Null ,
Constraint Time_Pk Primary Key (Time_no)
Create Table Room
Room_no      varchar2(5)      Not Null ,
Room_Name      varchar2(30)      Not Null ,
Capacity      varchar2(3)      Not Null ,
Constraint Room_PK Primary Key(Room_no)
create table Day_Time
Day varchar2 ( 1 ) Not Null ,
Time varchar2 ( 3 ) Not Null ,
Constraint Day_Time_PK Primary Key(Day,Time),
Constraint Day_PF Foreign Key(Day) references
Day(Dno),
Constraint Time_PF Foreign Key(Time) references
Time(Time_no)
Create Table Available_Course
Cno          varchar2 ( 7 )     Not Null,
No_sec          varchar2(2),
Constraint Availabel_Course_PK Primary Key(Cno),
Constraint Available_Course_Course_FK Foreign Key(Cno) references
Course(Cno)
Create Table RTM
Lecno varchar2 ( 10 ) Not Null ,
Room_no varchar2(5)           Not Null ,
Time varchar2 ( 3 )          Not Null ,
Day varchar2 ( 1 )     Not Null ,
Constraint Course_Section_PK Primary Key (Lecno,room_no),
Constraint Section_Course_Lecturer_FK Foreign Key ( Lecno ) references
Lecturer(Lecno),
Constraint Room_fk foreign key(Room_no) references room(room_no),
Constraint Section_Day_FK Foreign Key (Time,Day) references
Day_Time(Time,Day)
create table Section
Secno          varchar2 ( 2 ) Not Null ,
Cno      varchar2 ( 7 ) Not Null ,
Room_no      varchar2(5)      Not Null ,
Lecno      varchar2 ( 10 ) Not Null ,
Constraint LECT_COURSE_ROOM_PK Primary Key(secno,Cno),
Constraint LECT_COURSE_ROOM_FK Foreign Key(cno) references
Available_course(cno),
Constraint LECTCOURSE_ROOM_FK Foreign Key(Room_no,lecno) references
RTM(Room_no,lecno)

Answer 1

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.