Label:we need to consider the relationship between the data when we set up the database, in order to clarify the relationship between the data we need to do a uniform collation of the data. For the more complex database, we need to establish a database model, which can be divided into two steps: first, the structure analysis of the database and the use of tree, table and other descriptive data, and then analyze the database operation methods, rules and additions and deletions of the database ope
Essential Diagram for Windows forms is a scalable, high-performance model. NET platform, which can be used to develop interactive drawing and diagramming applications like Microsoft Visio, storing graphical objects in nodes, supporting vector and raster graphics.Specific features:
Supports multiple export formats: bitmap, Enhanced metafile, SVG file format
The control uses a clear MVC design, separati
In the previous article "Automatic layout of telecommunication network topology Diagram", we introduced the knowledge of the automatic layout of HT for Web Telecommunication network topology diagram, but did not describe the usage
In the network topology diagram, it is often necessary to use the automatic layout of the function, in the hierarchical relationship of big data, by hand a place is not too realistic, the workload is quite large, then there is the concept of automatic layout, to liberate the layout of the hands, so that the
Microsoft Visio2007 provides us with a lot of templates and countless shapes, some of which seem simpler, but others are relatively complex and not easy to get from. This article is mainly about how to create a basic block diagram with Visio2007 so you can get started quickly, by explaining some basic tips on how to open a template, put shapes into a drawing, and connect those shapes.
The following steps are specific:
Start Visio2007.
When
to integrate in a single icon, through the system monitoring, if the problem is found, the top left corner of the software shows a warning. The software can easily implement the route tracking, Ping and other commands through the topology diagram of Shanghai, and intuitively understand the overall network status.SmartDraw:Third, VisioGallery (called Shape Library) expansion1. Product Gallery for equipment
/set or Is/set types, such as GetName (0/setname (' HT ') and isexpanded (), for common attribute operations
attr type, accessed via getAttr (name) and setAttr (key, value), which is HT reserved for the user to store business data
Style type, operated by GetStyle (name) and SetStyle (key, value), Graphview meta style controlled by the Type property
Here I am adding the text description through the style type, setting the displayed text through the ' label ' property:EDGE.S ({//setst
discovery and SNPP (SNP) link.1, the principle of automatic discoveryIn order to manage connections in a layer network, in the control plane, the underlying transfer plane resources are represented by some entities, as shown in Figure 1, which is the relationship between the different transfer plane resources described in the ITU-T g.805, A view of the entities that are convenient for
KRON command, the principle is to log on to the network device by timed execution of shell scripts on the Linux server to backup configuration information to the TFTP server to implement automatic backup of network device configuration information. Can login via telnet/ssh, telnet unsafe, recommended ssh. If you must use Telnet, modify the script a little bit.sc
The question to be addressed in this article is how to automatically create a specific Protobuf message object and deserialize it after receiving the PROTOBUF data. "Automatic" means that when a new Protobuf message type is added to a program, this part of the code does not need to be modified and does not need to register the type of messages itself. In fact, Google PROTOBUF itself has a strong reflection (reflection) function, can be based on type n
In the previous blog in detail about the relative layout and absolute layout of iOS development, with the change of mobile screen size, in the app development in order to adapt to different sizes of mobile phone screen, with automatic layout to complete the functions and effects we want to achieve is particularly important. I prefer to use relative layouts. In the example below we will use our storyboard to set the constraints of our components and th
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