DELPHI DATASNAP 2010 Introductory operation (1) Why use DATASNAP 2010

Online about the new version of the DATASNAP information is not too much, I can find a comprehensive, that is, our QQ group (Datasnap[delphi] Three: 67803772) inside the two experts wrote the analysis of the article, and has been transferred to my blog article, And a friend of the group has translated some of Datasnap's data.

For DATSANP, in fact, I can only be a beginner, because some of the relevant knowledge is not too familiar, so I can only say that the level of the entry-level level, for some in-depth knowledge, I do not have a good understanding, write down this entry level blog, The main purpose is to group some friends like me, so that they can have an understanding of the simplest datasnap, because very few an article introduce this simple, entry-level operation, in the process if there are mistakes or understand the wrong, but also please master guidance.

About Multilayer

A lot of friends are looking and stopping, because really multilayer, need to filter a lot of related factors, but, a lot of time, a small application of ours, do not need a lot of fault-tolerant processing, some friends, the application of layer three, just to block my database address and port number, because if the SQL SERVER database , it is too easy to attack others, in fact, multilayer applications, many times and not what we imagine the complex

About Datasnap 2010 and DBX

In the process of chatting in the group, there are many friends that Datasnap 2010 can only be bundled with DBX, and if you want to use ADO, where you have to put Benten Datasnap 2010, the idea is wrong, Datasnap 2010 is called dbx Some of the related things in the library, that is, if we use ADO to connect to the target library, we still need to uses DBX related units, but this does not affect our use of ADO

About the difference between the 2009-2010 Datasnap and the low plate

Delphi 09/10 added a new datasnap, but did not put Benten on the old DATANSP support, we in Delphi 2010 above, or can be used d7-d2010 above the three layer of development method, but Delphi 2009 began to add a new datasnap, so that the Delphi in the data processing and has a qualitative upgrade, you can say that the new version of the DATASNAP is an important highlight of Delphi function

However, the new version is not entirely wishful, if you are still using SQL Server 2000, where you want to use DBX, your client will need to install to SQL Server 2008 client, otherwise, a series of errors, you do not know what is the thing!

However, this problem does not prevent the Delphi brothers to explore the true colors of Delphi Datasnap, has a lot of friends, the new application to the Delphi + Datasnap above, because relatively old version, to do a three-storey too simple

In the previous version of D2007, our sockt three layer, must run the Scktsrv.exe, even if some brothers to change the face, but this is still not let users feel your system is very strong, especially some years of bug has been so that most people can not solve, Larger companies have chosen the RO and other professional solutions, but some companies do not have pirated, and do not want to buy genuine, you can only reluctantly ....