column. Column Properties P, F, and M represent primary key, foreign key, and force (interpreted as follows): The value of the column specified by primary key uniquely identifies the row in the table. The column specified by the foreign key depends on the primary key column
added under the current workspace node in the browser on the left side of the window. A default conceptual map diagram_1 is automatically created and has been opened in the current work window. A conceptual model can have multiple such conceptual diagrams. You can specify one of them as the default values in the model attributes.
The workspace has a component panel that contains various symbols that can be used in the conceptual model. The most common ones are Entity and relationship, for
This article mainly describes how to design the structure of drawing objects in PHP.
This article mainly describes how to design the structure of drawing objects in PHP.Small and Medium-sized Data structures in PHP can be implemented by simple classes, that is, they are defined by simple data and operations. However, with the complexity of the data structure, simple classes cannot meet the needs of fully re
Object | design | Application example This article mainly expounds how to realize the structure design of drawing object in PHP.
In PHP, the small and medium data structures can be implemented by simple classes, which are defined by simple data and operations. However, with the complication of data structure, the simple class cannot satisfy the requirement of th
Introduction | design
Author: Dong Zheng Technology
Design product packaging, the author's personal habit is to first understand the product market positioning, and then the idea of drawing lines, and from the brain to form a printed product image, good ideas for the design of the basis of style. The appearance of packaging to eye-catching, in the visual to be in
just in the Dreamweaver Squadron text changes have been reflected here, the corresponding HTML code has also been added. As shown in the following illustration:
6, we now make a little change in fireworks, in the "Carlsson Garments Co., Ltd." Add the words "2001.4".
7, click the "Done" button at the top of the document window, this will return to DW, you will see the picture is updated, but the text formatting information of the section of the document slice still exists.
It 's written i
time the property Panel has fireworks table tag on the top left, click the Edit button at the bottom right.
4, the FIREWORKS4 will start and open the Example.png document. Note the "Edit from Dreamweaver" flag appears at the top of the document window, as shown in the following illustration:
5, select the text in the middle of the document slice, open the object panel, we can see just in the Dreamweaver Squadron text changes have been reflected here, the corresponding HTML code has also been
Web channel page has been revised, the layout is still the traditional three column mode, but the revision of the middle column to adjust the theme content bar, more in line with the domestic network users in the column browsing, reading habits. Three columns from top to bottom banner neat, easy to read, reading in the column
of the article.In fact, I also recommend another book, "-java design mode (2nd edition) Chinese version", the book I am just beginning to see, but from the introduction of the book on the 23 design patterns are categorized into five categories:So in this blog post in the organization also use these five types of models for overview, avoid a pattern of a blog post, too redundant.Blog post will only post the
other non-primary key attributes depend on the primary key, then this property is indirectly dependent on the primary key, which is known as passing dependent on the primary property. Popular understanding: A table with up to 2 layers of the same type information eg: Dad table, not meet the third paradigm
Father
Son
Daughter
Little Bear of the daughter
Daughter's SpongeBob SquarePants
Change to dad informatio
imagination, the limited space to make full use of, create the best results, so that everyone satisfied.The final on-line effect chart.
3, A brief introduction to the design idea of the final version
The final version of the simple style adopted, mainly around the 2010 Asian Games set VI, such as banner background and the main map, the page of the ink background, column is the use of the Asian Games VI
design. When our data volume is not large, we may be more efficient.
Design Analysis
Through the above database design document, we found the following points. We saved the following fields of medicines in each table:
Whether we should directly store the primary key information in the drug dictionary, and then directly reference the primary ke
Article Description: use bread crumbs to simplify multilayer tabs.
A website information structure needs to be displayed to the user so that the user can know where the current is and will be able to guess where the content might be.How to express the information structure of the website to the user?Use navigation.
Tabs Good navigation!Tabs navigation is a form of expression, can be very intuitive to show the current column and other colum
the width of the view to less than 600 pixels, as shown in:
How is it? The entire sidebar responds to our new video port, and the most important content area of the website occupies the width of the entire browser window. Note that the navigation links in the header are arranged horizontally instead of placed next to the logo. In addition, the logo size has been adjusted. All of the above changes help you create a better experience based on the size of the view.
Let's take a look at another
How to reduce the mysql storage column (taking designing a network store as an example) bitsCN.com
When designing a database, we often encounter fields that indicate "no". Wang Wei, a network fisherman, encountered the following situations when designing a shop table:
The store has the following attributes: first, whether it has the consumer protection service:
Second, there are also such attributes as wh
Note: The original title "Small Force lattice: details to improve temperament", several English net to the original title changes
Time is always in the spiral of development and change, the design trend is the same. With the development of flat design of mobile end, more and more designers are not satisfied with the dull combination of color block, icon and system font, and put more thoughts into the visua
Giving users timely and appropriate feedback is a very important principle of interactive design. By Sohu News Client team written under the "Design," a book, the operation of feedback from the form, content, position several aspects made a very detailed summary, full of dry goods. Today @ Green Creek Joanna This reading note extracts the main points of the book and with examples, to share with you.
One,
, and promote the integration with mobile Web sites.
Here are some of the use of hidden menus with navigation icons of the site design, are fresh produce.
Ewebdesign
In this example, we can see a large number of image backgrounds and parallax effects. The menu icon is placed in the upper-right corner of the headline and opens with a very detailed navigation menu pointing to the other plates.
obsessed with him, for a few reasons:
1. So that the design of the finished product has a mathematical basis, the design elements are not independent of their existence, there must be some kind of visual relevance, perspective, alignment, even if the end result is disordered disorder.
2. Normative data facilitates expansion, compatibility with the application of various scenarios, or the development of r
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