自動化pl \ sql函數

Question

我想自動化註冊系統，以便自動註冊學生。然後我想要一個程序來自動化分級系統。我已經包含了我編寫的代碼，使大多數此作業能夠工作，但不確定如何爲註冊系統和分級系統合併PL \ SQL自動化功能。所以任何幫助或想法，我將不勝感激請。

set Linesize 250 
set pagesize 150 

drop table student; 
drop table faculty; 
drop table Course; 
drop table Section; 
drop table location; 
DROP TABLE courseInstructor; 
DROP TABLE Registration; 
DROP TABLE grade; 

create table student( 
studentid number(10), 
Lastname varchar2(20), 
Firstname Varchar2(20), 
MI    Char(1), 
address    Varchar2(20), 
city   Varchar2(20), 
state  Char(2), 
zip  Varchar2(10), 
HomePhone  Varchar2(10), 
Workphone  Varchar2(10), 
DOB  Date, 
Pin VARCHAR2(10), 
Status Char(1)); 

ALTER TABLE Student 
Add Constraint Student_StudentID_pk Primary Key (studentID); 

Insert into student values (1,'xxxxxxxx','xxxxxxxxxx','x','xxxxxxxxxxxxxxx','Columbus','oh','44159','xxx-xxx-xxxx','xxx-xxx-xxxx','06-Mar-1957','1211','c');  

create table faculty(
FacultyID Number(10), 
FirstName Varchar2(20), 
Lastname Varchar2(20), 
MI Char(1), 
workphone Varchar2(10), 
CellPhone Varchar2(10), 
Rank Varchar2(20), 
Experience Varchar2(10), 
Status Char(1)); 

ALTER TABLE Faculty 
ADD Constraint Faculty_facultyId_PK PRIMARY KEY (FacultyID); 

insert into faculty values (1,'xxx','xxxxxxxxxxxx','xxx-xxx-xxxx','xxx-xxx-xxxx','professor','20','f'); 

create table Course(
CourseId  number(10), 
CourseNumber Varchar2(20), 
CourseName  Varchar(20), 
Description  Varchar(20), 
CreditHours  Number(4), 
Status  Char(1)); 

ALTER TABLE Course 
ADD Constraint Course_CourseID_pk PRIMARY KEY(CourseID); 

insert into course values (1,'cit 100','computer concepts','introduction to PCs','3.0','o'); 
insert into course values (2,'cit 101','Database Program','Database Programming','4.0','o'); 
insert into course values (3,'Math 101','Algebra I','Algebra I Concepts','5.0','o'); 
insert into course values (4,'cit 102a','Pc applications','Aplications 1','3.0','o'); 
insert into course values (5,'cit 102b','pc applications','applications 2','3.0','o'); 
insert into course values (6,'cit 102c','pc applications','applications 3','3.0','o'); 
insert into course values (7,'cit 103','computer concepts','introduction systems','3.0','c'); 
insert into course values (8,'cit 110','Unified language','UML design','3.0','o'); 
insert into course values (9,'cit 165','cobol','cobol programming','3.0','o'); 
insert into course values (10,'cit 167','C++ Programming 1','c++ programming','4.0','o'); 
insert into course values (11,'cit 231','Expert Excel','spreadsheet apps','3.0','o'); 
insert into course values (12,'cit 233','expert Access','database devel.','3.0','o'); 
insert into course values (13,'cit 169','Java Programming I','Java Programming I','3.0','o'); 
insert into course values (14,'cit 263','Visual Basic','Visual Basic Prog','3.0','o'); 
insert into course values (15,'cit 275','system analysis 2','System Analysis 2','3.0','o'); 



create table Section(
SectionID  Number(10), 
CourseId  Number(10), 
SectionNumber VarChar2(10), 
Days  Varchar2(10), 
StartTime  Date, 
EndTime  Date, 
LocationID  Number(10), 
SeatAvailable Number(3), 
Status  Char(1)); 

ALTER TABLE Section 
ADD Constraint Section_SectionID_PK PRIMARY KEY(SectionID); 


insert into section values (1,1,'18977','r','21-Sep-2011','10-Dec-2011','1','89','o'); 


create table Location(
LocationId  Number(10), 
Building  Varchar2(20), 
Room  Varchar2(5), 
Capacity  Number(5), 
Satus  Char(1)); 

ALTER TABLE Location 
ADD Constraint Location_LocationID_pk PRIMARY KEY (LocationID); 

insert into Location values (1,'Clevleand Hall','cl209','35','o'); 
insert into Location values (2,'Toledo Circle','tc211','45','o'); 
insert into Location values (3,'Akron Square','as154','65','o'); 
insert into Location values (4,'Cincy Hall','ch100','45','o'); 
insert into Location values (5,'Springfield Dome','SD','35','o'); 
insert into Location values (6,'Dayton Dorm','dd225','25','o'); 
insert into Location values (7,'Columbus Hall','CB354','15','o'); 
insert into Location values (8,'Cleveland Hall','cl204','85','o'); 
insert into Location values (9,'Toledo Circle','tc103','75','o'); 
insert into Location values (10,'Akron Square','as201','46','o'); 
insert into Location values (11,'Cincy Hall','ch301','73','o'); 
insert into Location values (12,'Dayton Dorm','dd245','57','o'); 
insert into Location values (13,'Springfield Dome','SD','65','o'); 
insert into Location values (14,'Cleveland Hall','cl241','10','o'); 
insert into Location values (15,'Toledo Circle','tc211','27','o'); 
insert into Location values (16,'Akron Square','as311','28','o'); 
insert into Location values (17,'Cincy Hall','ch415','73','o'); 
insert into Location values (18,'Toledo Circle','tc111','67','o'); 
insert into Location values (19,'Springfield Dome','SD','69','o'); 
insert into Location values (20,'Dayton Dorm','dd211','45','o'); 

Alter Table Student 
Add Constraint student_Zip_CK Check(Rtrim (Zip,'1234567890-') is null); 

Alter Table Student 
ADD Constraint Student_Status_CK Check(Status In('c','t')); 

Alter Table Student 
ADD Constraint Student_MI_CK2 Check(RTRIM(MI,'abcdefghijklmnopqrstuvwxyz')is Null); 

Alter Table Student 
Modify pin not Null; 

Alter table Faculty 
Add Constraint Faculty_Status_CK Check(Status In('f','a','i')); 

Alter table Faculty 
ADD Constraint Faculty_Rank_CK Check(Rank In ('professor','doctor','instructor','assistant','tenure')); 

Alter table Faculty 
ADD Constraint Faculty_MI_CK2 Check(RTRIM(MI,'abcdefghijklmnopqrstuvwxyz')is Null); 

Update Section Set Starttime = To_date('09-21-2011 6:00 PM', 'mm-dd-yyyy hh:mi pm'); 
Update Section Set Endtime = To_date('12-10-2011 9:50 PM', 'mm-dd-yyyy hh:mi pm'); 

alter table Section 
Add Constraint StartTime_Status_CK Check (starttime < Endtime); 

Alter Table Section 
Add Constraint Section_StartTime_ck check (StartTime < EndTime); 

Alter Table Section 
ADD Constraint Section_CourseId_FK FOREIGN KEY (CourseID) References Course(CourseId); 

Alter Table Section 
ADD Constraint Section_LocationID_FK FOREIGN KEY (LocationID) References Location (LocationId); 

Alter Table Section 
ADD Constraint Section_Days_CK Check(RTRIM(Days,'mtwrfsu')IS Null); 

update section set seatavailable = '99'; 

Alter Table Section 
ADD Constraint Section_SeatsAvailable_CK Check (SeatAvailable < 100); 

Alter Table Course 
Add Constraint Course_CreditHours_ck check(CreditHours < = 6.0); 

update location set capacity = '99'; 

Alter Table Location 
Add Constraint Location_Capacity_CK Check(Capacity < 100); 

Create Table Registration (
StudentID  Number(10), 
SectionID  Number(10), 
Constraint Registration_pk Primary key (studentId, Sectionid)); 

Insert into registration values (1, 2); 
Insert into Registration values (2, 3); 
Insert into registration values (3, 4); 
Insert into registration values (4, 5); 
Insert into registration values (5, 6); 
Insert into registration values (6, 7); 
Insert into registration values (7, 8); 
Insert into registration values (8, 9); 
insert into registration values (9, 10); 
insert into registration values (10, 11); 
insert into registration values (9, 12); 
insert into registration values (8, 13); 
insert into registration values (7, 14); 
insert into registration values (6, 15); 
insert into registration values (5, 17); 
insert into registration values (4, 18); 
insert into registration values (3, 19); 
insert into registration values (2, 20); 
insert into registration values (1, 21); 
insert into registration values (2, 22); 
insert into registration values (3, 23); 
insert into registration values (4, 24); 
insert into registration values (5, 25); 
Insert into registration values (6, 24); 
insert into registration values (7, 23); 
insert into registration values (8, 22); 
insert into registration values (9, 21); 
insert into registration values (10, 20); 
insert into registration values (9, 19); 
insert into registration values (8, 17); 



Create Table courseInstructor(
FacultyID  Number(10), 
SectionID  Number(10), 
Constraint CourseInstructor_pk Primary key (FacultyId, SectionID)); 




insert into courseInstructor values (1, 1); 
insert into courseInstructor values (2, 2); 
insert into courseInstructor values (3, 3); 
insert into courseInstructor values (4, 4); 
insert into courseInstructor values (5, 5); 
insert into courseInstructor values (5, 6); 
insert into courseInstructor values (4, 7); 
insert into courseInstructor values (3, 8); 
insert into courseInstructor values (2, 9); 
insert into courseInstructor values (1, 10); 
insert into courseInstructor values (5, 11); 
insert into courseInstructor values (4, 12); 
insert into courseInstructor values (3, 13); 
insert into courseInstructor values (2, 14); 
insert into courseInstructor values (1, 15); 



Create table grade(
StudentID  Number(10), 
SectionID  Number(10), 
Grade  Varchar2(1), 
Constraint grade_pk Primary key (StudentID, SectionID)); 


CREATE OR REPLACE TRIGGER TR_CreateGrade 
AFTER INSERT ON Registration 
FOR EACH ROW 
BEGIN 
INSERT INTO grade (SectionID,StudentID,Grade) 
VALUES(:New.SectionID,:New.StudentID,NULL); 
END TR_createGrade; 
/

CREATE OR REPLACE FORCE VIEW V_reg_student_course AS 
SELECT 
Registration.StudentID, 
student.LastName, 
student.FirstName, 
course.CourseName, 
Registration.SectionID, 
course.CreditHours, 
section.Days, 
TO_CHAR(StartTime, 'MM/DD/YYYY') AS StartDate, 
TO_CHAR(StartTime, 'HH:MI PM') AS StartTime, 
TO_CHAR(EndTime, 'MM/DD/YYYY') AS EndDate, 
TO_CHAR(EndTime, 'HH:MI PM') AS EndTime, 
location.Building, 
location.Room 
FROM registration, student, section, course, location 
WHERE registration.StudentID = student.StudentID 
AND registration.SectionID = section.SectionID 
AND section.LocationID = location.LocationID 
AND section.CourseID = course.CourseID; 

CREATE OR REPLACE FORCE VIEW V_teacher_to_course AS 
SELECT 
courseInstructor.FacultyID, 
faculty.FirstName, 
faculty.LastName, 
courseInstructor.SectionID, 
section.Days, 
TO_CHAR(StartTime, 'MM/DD/YYYY') AS StartDate, 
TO_CHAR(StartTime, 'HH:MI PM') AS StartTime, 
TO_CHAR(EndTime, 'MM/DD/YYYY') AS EndDate, 
TO_CHAR(EndTime, 'HH:MI PM') AS EndTime, 
location.Building, 
location.Room 
FROM courseInstructor, faculty, section, course, location 
WHERE courseInstructor.FacultyID = faculty.FacultyID 
AND courseInstructor.SectionID = section.SectionID 
AND section.LocationID = location.LocationID 
AND section.CourseID = course.CourseID; 

SELECT * FROM V_reg_student_course; 

SELECT * FROM V_teacher_to_course; 

Answer 1

我不知道有多少細節需要爲這項工作，但這些都是我看到的東西：

你混合CHAR和VARCHAR2類型，沒有理由這樣做。如果條目預計少於4000個字符，請讓您的生活更輕鬆，堅持使用VARCHAR2
許多人的姓名，城市和地址遠遠超過20個字符。想想很大，250個字符。
中間初始值有問題。不是每個人都有一個，如果他們這樣做，他們可能希望他們的中間名拼寫出來。
地址信息應分解成一系列單獨的表格，但我認爲這可能超出了您的任務範圍
不是每個人都住在美國，想想一個數字鍵到輔助表的城市和州/各省。
許多這些領域應該不爲空，如課程編號，課程名稱

現在，您的問題關於自動化功能。我不確定你真的想要什麼。註冊課程的學生在數據庫之外發起。工作人員將根據表格輸入學生註冊選項。或者學生將以電子方式提交，無論哪種方式，一些前端應用程序將啓動交易。

例如，在你的前端，有人按下「提交」。然後老式的方法是打開一個到數據庫的連接，添加一些參數，使一個過程調用像

Add_student_to_course（student_id_in在數量上，section_id_in在數量，registration_out OUT SYS_REFCURSOR）
裏面你檢查，看看該程序學生是否存在，課程是否存在，課程是否有空位。
根據驗證過程的複雜性，處理錯誤處理的方法很多。如果一次註冊有可能違反多項業務規則，那麼您希望返回複雜的信息。 （如果課程必須有座位，如果課程必須有老師，如果學生付費）。

所以，你的處理就像是陳述一樣。當一切都很好時，在一個簡單的應用程序中，sys_refcursor可能看起來像
select registration_no，error_number from dual;
如果一切正常，error_number爲0，如果不是，則返回錯誤代碼。否則，註冊碼爲0，錯誤代碼是指有人類可讀文本的錯誤表。
（我知道這是一個簡單的方法，但這是一個簡化的練習）