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This article will explain in detail how to understand the ADO.NET object model in detail, the content of the article is of high quality, so the editor will share it for you as a reference. I hope you will have some understanding of the relevant knowledge after reading this article.

For most applications, whether they are Windows desktop applications or Web applications, storing and retrieving data is their core function. Therefore, the development of database has become a necessary skill of software development. If it used to be "learn mathematics, physics and chemistry well, you are not afraid to go all over the world", then for today's software developers, it is "to learn the database well and not be afraid to go anywhere!"

ADO.NET is the access architecture of Microsoft's new generation .NET database, and ADO is the abbreviation of ActiveX Data Objects. ADO.NET is a bridge between database applications and data sources. It mainly provides an object-oriented data access architecture for the development of database applications.

In order to better understand the various components of the architecture model of ADO.NET, we can graphically understand the related objects in ADO.NET, as shown in figure 5-3 is the diagram of the database objects in ADO.NET.

Figure 5-3 ADO.NET object model

We can understand the various parts of the ADO.NET object model in an interesting and visual way, as shown in figure 5-4, and we can see the status of these objects and the logical relationships between them.

ADO.NET interesting understanding map

Comparing the diagrams of ADO.NET database objects, we can use a comparative method to visually understand the role of each object, as shown in figure 5-4.

◆ database is like a water source, which stores a large amount of data.

◆ Connection is like an inlet tap extending into the water, keeping in contact with the water. Only when it is "connected" to the water can other objects pump water.

The ◆ Command is like a pump, providing power and execution for pumping, passing through the "faucet" and then returning the water to the "pipe" above.

◆ DataAdapter and DataReader are like water pipes, serving as water transmission tasks and acting as bridges. DataAdapter is like an aqueduct, which carries water from the water source to the reservoir for preservation through the engine. DataReader is also a water pipe. Unlike DataAdapter, DataReader does not send water to the reservoir. Instead, it sends water directly to users or fields in one direction, so it is faster than turning it in the reservoir.

◆ DataSet is a large reservoir where the pumped water is stored in a related pool. Even if the "pumping device" (disconnected, offline) is removed, the existence of "water" can be maintained. This is the core of ADO.NET.

◆ DataTable is like a separate pool in a reservoir, storing different kinds of water. A large reservoir consists of one or more such pools.

On how to interesting understanding of the ADO.NET object model to share here, I hope that the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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