我試圖使用Oracle 10g創建一個圖書館系統(學校工作),但我被困在創造簡單APEX報表和表單,錯誤消息說:無法創建的Oracle APEX應用程序錯誤ORA-20001
ORA-20001:無法創建模塊。 ORA-20001:創建頁面錯誤。 ORA-20001:無法創建表單頁面。 ORA-20001:錯誤頁面= 8 item =「P8_BRANCHID」id =「」ORA-20001:Error page = 8 item =「P8_BRANCHID」 id =「」與現有的應用程序級別項目具有相同的名稱。 ORA-0000: 正常,成功完成
無法創建應用程序。
這是我的架構,萬一我做錯了什麼:
create table publisher(
PublisherName varchar2(30) not null,
Address varchar2(30) not null,
Phone number(20),
constraint publisher_pk primary key (PublisherName)
);
create table book(
BookId number(4) not null,
Title varchar2(50) not null,
PublisherName varchar2(30) not null,
constraint book_pk primary key (BookId),
constraint book_fk foreign key (PublisherName)
references publisher (PublisherName)
);
create table bookauthors(
BookId number(4) not null,
AuthorName varchar2(30) not null,
constraint bookauthors_pk primary key (BookId,AuthorName),
constraint bookauthors_fk foreign key (BookId) references book (BookId)
);
create table librarybranch(
BranchId number(4) not null,
BranchName varchar2(30) not null,
Address varchar2(30) not null,
constraint librarybranch_pk primary key (BranchId)
);
create table borrower(
CardNo number(4) not null,
BName varchar2(30) not null,
Address varchar2(30) not null,
Phone number(20) not null,
constraint borrower_pk primary key (CardNo)
);
create table bookcopies(
BookId number(4) not null,
BranchId number(4) not null,
No_Of_Copies number(4) not null,
constraint bookcopies_pk primary key (BookId,BranchId),
constraint bookcopies_fk foreign key (BookId) references book (BookId),
constraint bookcopies2_fk foreign key (BranchId) references librarybranch (BranchId)
);
create table bookloans(
BookId number(4) not null,
BranchId number(4) not null,
CardNo number(4) not null,
DateOut date,
DueDate date,
constraint bookloans_pk primary key (BookId,BranchId,CardNo),
constraint bookloans_fk foreign key (BookId) references book (BookId),
constraint bookloans2_fk foreign key (BranchId) references librarybranch (BranchId),
constraint bookloans3_fk foreign key (CardNo) references borrower (CardNo)
);
感謝。
與您的問題無關,但我認爲'bookloans'表格需要一些調整。應該將FKs 1和2合併爲一個:'約束bookloans_fk外鍵(BookId,BranchId)引用librarybranch(BookId,BranchId)' – 2012-04-11 20:26:29
您還可以添加一個Check約束,即DateOut
2012-04-11 20:29:30
一種強制圖書館沒有借出只有3份副本的書籍的4份(或100份)副本的方法。 (這比對模式進行簡單更改要困難) – 2012-04-11 20:30:57