我试图使用Oracle 10g创建一个图书馆系统(学校工作),但我被困在创造简单APEX报表和表单,错误消息说:无法创建的Oracle APEX应用程序错误ORA-20001
ORA-20001:无法创建模块。 ORA-20001:创建页面错误。 ORA-20001:无法创建表单页面。 ORA-20001:错误页面= 8 item =“P8_BRANCHID”id =“”ORA-20001:Error page = 8 item =“P8_BRANCHID” id =“”与现有的应用程序级别项目具有相同的名称。 ORA-0000: 正常,成功完成
无法创建应用程序。
这是我的架构,万一我做错了什么:
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)
);
感谢。
与您的问题无关,但我认为'bookloans'表格需要一些调整。应该将FKs 1和2合并为一个:'约束bookloans_fk外键(BookId,BranchId)引用librarybranch(BookId,BranchId)' – 2012-04-11 20:26:29
您还可以添加一个Check约束,即DateOut
2012-04-11 20:29:30
一种强制图书馆没有借出只有3份副本的书籍的4份(或100份)副本的方法。 (这比对模式进行简单更改要困难) – 2012-04-11 20:30:57