The Soviet delegation followed Fu Xin to the Huaxing Industrial Development Company in Xunyang City, Xijiang Province.

After seeing the modern and advanced assembly line production of the factory under the name of Huaxing, the five Soviet hillbillies couldn't help but marvel that this is a very internationally competitive large enterprise, and the Chinese are moving towards the road of rejuvenation!

However, the biggest gain in their line of work still comes from Fu Xin, because Fu Xin proposed a new concept to them, and this concept inspired them very deeply!

Especially Andrei, a fellow Soviet expert, was very impressed, and he gained a lot, but just as he was about to ask further, Fu Xin kept silent, and then he also realized that the next thing was about the core secrets of others.

The concept proposed by Fu Xin to these five Soviet hillbillies is a data bus.

Data Bus, abbreviated as DB in English, stands for DataBus, which is used to transmit data information. number

According to the bus, it is a bidirectional three-state bus, that is, it can not only transfer the data of the CPU to other components such as memory or input and output interfaces, but also transfer data from other components to the CPU.

The number of bits in a data bus is an important metric for microcomputers and is usually consistent with the word length of microprocessing. For example, the Intel 8086 microprocessor has a word length of 16 bits and a data bus width of 16 bits.

Oh, by the way, it's important to point out that the meaning of data is general, it can be real data, it can be instruction code or state information, and sometimes even a control message. Therefore, in practical work. What is transmitted on the data bus is not necessarily just the actual data.

"Mr. Fu, you proposed the concept of this data bus. We probably understand, but how do you implement the exchange of data between business entities between systems? Andrei asked sharply.

Fu Xin replied, "It is not difficult to achieve this, because each subsystem has a business entity layer on the architectural layer, and the data exchange mechanism establishes a layer at the business entity layer that is transparent to all application systems."

Subsystems, regardless of the specific technical solution they implement, can be shared and interacted with each other through the business entity layer, which establishes a structure for continuous integration and business expansion between subsystems. The result is a scalable and complete integrated information system. ”

Andrei thought for a while, then said, "I think I understand, but how do you exchange data between systems?" ”

"I think there are two kinds of data exchange between systems, one is the data exchange at the business entity level, and the other is the data exchange of formatted files."

"Can you elaborate on that?" Andre was already very convinced of Fu Xin at this time, and he was still a little arrogant before, although Fu Xin was a Nobel Prize winner in physics. But in his opinion, Fu Xin won this award, which was a bit of a waste, but now. He didn't think so at all, and before he knew it, he had changed his name to deal with the new one. Changed to you.

It is conceivable that an old man in his fifties respectfully calls a young man in his twenties for you. But I wonder how Fu Xin's talent impressed him.

Fu Xin thought for a while and called up the information in his mind. "In my opinion, data exchange at the business entity level is the most straightforward and efficient exchange solution between homomorphic subsystem systems.

It should behave as follows: by defining the data object interface layer between homogeneous subsystems, transmitting through DTO, or directly connecting or accessing data tables in the database, so as to achieve data sharing and exchange between homogeneous subsystems.

For example, data sharing and exchange between various subsystems in the collection and management system, and data sharing between business systems and data mining are typical data exchanges at the business entity level. ”

"What about formatted file data exchange?" Andre was very excited at this time, and if he got a treasure, he immediately asked Fu Xinlai, for fear that Fu Xin would not tell him.

Fu Xin smiled slightly, he could understand Andre's urgency, when he was engaged in research in his previous life, once he discovered a new field, he would also be like a treasure, and then he would desperately and urgently study it, and the mood at this time was to know the final result very much!

Fu Xi did not embarrass Andre, and then explained: "Formatted file data exchange is file transmission with external systems, business internal systems and external information exchange needs, requiring the corresponding data sharing and exchange technical mechanism. Such problems are usually solved using filesystem-based technical solutions, such as file submission and file exchange.

For example, there is real-time and non-real-time data exchange between tax, treasury, and banking, and the optimal solution for this exchange is to use files to exchange through sockets. ”

"The implementation of this exchange method should be based on the underlying technology, right?" Andre asked tentatively, he only had some ideas now, but he didn't go to the laboratory to verify it, and he didn't know if it was correct, the current idea was a conjecture at best.

Fu Xin nodded undeniably, and did not deny that the realization of this kind of technology does generally rely on the underlying technology.

Andre fell into deep thought again, and after a while, Andre suddenly looked at Fu Xin suspiciously, and asked, "Mr. Fu, you didn't say anything about the data exchange method between this system, did you?" How do I feel like something is always missing? It's weird......"

Fu Xin immediately shook his head and denied it, it was clear that there was no, but in fact, Fu Xin did say one thing less, there should be three ways of data exchange between systems, Fu Xin said two, and there is another one, called WebService data exchange.

But this way of data exchange, related to the Web, Fu Xin naturally does not want to say more, Web, many people in the 21st century may not know its original meaning, that is, the meaning of spider web and web, but when it comes to web pages, everyone may understand, yes, Web in web design, we call the meaning of web pages.

The origin of the so-called web page can be traced back to 1980 at the earliest, but the definition of the web is relatively late. Web was defined in 1989 by a Briton in one of the largest research institutes in the European Community. The development of the real Web. Also started in 1989.

So, the Web. This is advanced content, after all, it is only 1986, about such an important content, Fu Xin naturally will not say it, not to mention, the other party is still a Soviet, not Chinese.

Good things, it's better to hide them and study them yourself! There is no one who will not be selfish, so. WebService data exchange, Fu Xin is resolutely not going to reveal it to Andrei.

However, Andre was still a little unwilling and asked: "Mr. Fu, you should have forgotten to take into account the data sharing and exchange between heterogeneous subsystems, right?" ”

Fu Xin frowned, and sighed in his heart, this Soviet expert named Andrei really has two brushes, indeed, between heterogeneous subsystems, there is a situation where the data is not centralized at the same time. Effective technical means must be used to ensure heterogeneous data sharing and exchange.

WebService is a standard web-based service that is not limited by the transport protocol or hardware, nor is it limited by the specific implementation technology of the subsystem. Moreover, if there is a more advanced and complete application system or product that provides an integrated interface based on WebService, this solves the data sharing and exchange between heterogeneous subsystems.

WebServices can also address data exchange across networks and industry systems. This requires the other party interface unit to also have a WebService service.

Fu Xin thought of this, but it was impossible for Fu Xin to say these contents. He quickly shook his head in denial, and quietly covered it up: "Professor Andrei." Sorry, the concept of a data bus. At present, I am also in the process of exploring, and I have not been able to perfect his concept, so I am not so clear whether I have taken into account the sharing and exchange of data between heterogeneous subsystems.

After all, when I was researching this data bus, it was also because our company was researching program-controlled telephone systems, and we didn't use too much energy to study it, that is, a few people had some thinking, verification and supplementation of the concept I proposed! ”

"Oh." Andrei was a little disappointed, he didn't know if Fu Xin really didn't study so much, or he still had to hide, I heard that the Chinese liked to hide and tuck, so Andrei instinctively thought that Fu Xin was hiding and tucking!

Seeing Andre's disappointed eyes, Fu Xina decided to give this old man a little sweetness, otherwise how could this old man be fooled? The Soviet Union is almost over, and Fu Xin has to start making some necessary arrangements for the Soviet Union, and this Andrey, Fu Xin seems to be able to be used as a chess piece.

Huaxing Group can use Andrei as a pawn to station in the Soviet Union in advance, which will be very beneficial for future operations!

Fu Xin said: "By the way, Mr. Andre, we have made some definitions and specifications for the data bus, you can see if the definitions and specifications we have made are reasonable." ”

"Speak, please." Andre still puts his position relatively low, this guy seems to be a pure scientific research worker, and the spirit of not being ashamed to ask questions has been perfectly reflected in him, so he has also successfully entered Fu Xin's sight, and is about to become a pawn of Fu Xin.

Fu Xin said: "The bus is a collection of signal lines, which is a common channel for transmitting information between modules, through which various components of the computer can transmit various data and commands. In order to make products from different suppliers interchangeable and give users more choices, the technical specifications of the bus should be standardized.

Roughly speaking, I think there are the following three parts: first, the mechanical structure specification, which includes the module size, bus plug, bus connector and installation size; Functional specifications, including the name of each signal line (pin name), function, and operating process of each signal line of the bus; There is also the electrical specification, that is, the effective level of each signal line of the bus, the dynamic conversion time, the load capacity, etc., ......"

After Fu Xin gave an example, he began to tell some data stored in his mind, of course, these data are very rough data, too accurate, and the world loves Andre and is not a fool.

"Mr. Fu, you have said these things, I can't give you an answer, these are all things that need to be verified in the laboratory, it's better to ......" Speaking of this, Andrei still listened a little and looked at Chartoff, after all, Chartloff is the head of the delegation, and the decision is up to Chartoff.

Chartloff and Andrei glanced at each other, and also understood what Andrei was thinking, so he said goodbye to Fu Xin: "Mr. Fu, I'm glad you can let us visit your factory, thank you!" I think we're pretty much the same, and we ourselves have something to discuss here, you see, we're like this today, okay? ”

Fu Xin nodded, and then politely retained the members of the five Soviet delegations.

PS: Students who have read this chapter should understand that the way for participation in the collapse of the USSR began to be paved! Spoiler one, yes, it did begin to pave the way for participation in the event of the collapse of the Soviet Union. (To be continued......)