What is function and working of the data feed simulator?

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Hi. I have a database of company record and now I want to update it by using a data feed simulator based on MS Excel or MS Access connected to the client application. But I don’t know how to use the simulator to perform this task. Please help me to understand working on it and provide some guidance related to It.

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Answered By 0 points N/A #152278

What is function and working of the data feed simulator?

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Hello,

What is the database of company records in?

You need to have clear understandings as to what is a Data Feed actually? A very rough overview is explained below; it is similar to the HTTP traffic:

When you open an URL following set of activities are carried out:

·         You machine and a server establish a connections.

·         Server starts sending the data to your computer.

·         Your machine receives that server sent data and assembles it in the form of website to be displayed. In between if some of the data is not received or missing than your computer would send some acknowledgement for both send and receive data.

·         After receiving all the data from the server your computer disconnects the connection.

If at any point either of the party stops responding than the other one kills the connection citing technical difficulties.

What happen when you have streaming data feeds?

·         The client and server contact and establish a connection.

·         The client starts receiving the data sent by the server.

·         Your machine receives that server sent data and assembles it in the form of website to be displayed. In between if some of the data is not received or missing than your computer would send some acknowledgement for both send and receive data.

·         The main difference here is that the client does not terminate the connection as the data is constantly received.

It is very important the web server script does not terminates the connection assuming that the data is sent completely and no more data needs to be sent.

For further information try Wikipedia article regarding TCP/IP and article regarding long-polling/HTTP streaming for concrete examples.

HTH!

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