http://blog.csdn.net/conviction_thinking/article/details/7959270
Tag: model
PowerDesigner (5) – Concept Data Model (CDM Generate LDM, PDM and OOM)
The original text is from: http://www.voidcn.com/article/p-avzfndrz-oy.html
Conceptual Data Model (CDM): expresses the overall logical structure of data, which is independent of any software
How do I scroll to the last line of the SQLITE model in the QTableView?
I have a Sqlite model with a few thousand rows connected to a QTableView. I can view the rows in the QTableView, but when I scroll to the bottom of the QTableView, I can only reach the first few hu
PowerDesigner (6) – Physical Data Model (PDM Reverse Engineering)
The original text is from: http://www.voidcn.com/article/p-vudrzoeb-oy.html
Physical Data Model (PDM): After the logical structure of the database is designed, its physical design needs to be
PowerDesigner (7) – Object-oriented model (with example, sequence diagram, class diagram, generating Java source code and Java source code generation class)
The original text is from: http://www.voidcn.com/article/p-owwcfxjt-oy.html
The object-oriented model is a model that uses UML (Unified Modeling Language) graphics to describe the system stru
PowerDesigner collaboration with SQL Server () data model and database of database
Data model conversion into database Generate database script according to DB design, “Database”-“Generate Database…”;
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Set the script storage path and name, select “Direct generati
Ruby – Rails Model: Validates_Unique Ness_OF Will not delete the endless space before a unique check? Isn’t the front guide?
Suppose I implement validates_uniqueness_of on the username. If the name’maddy’ already exists, then it will accept the value’maddy’ as the unique value instead of’maddy’. It should remove both sid
04-box model 1
—Restore content start—
Salted Fish Alliance
.box-one{
width: 300px;
height: 200px;
/* border-width: 30px;
border-style: solid;
border-color: pink;*/