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Java Forum / Databases / May 2005How to build a custom type 4 driver?
Hello, I am working on a homebrew DBMS and need to prepare both a type 3 and type 4 driver on my own. I check the tutorial on JavaWorld on type 3 driver design but lack information on that of type 4. Any one can suggest valuable tips? Thank you! > Hello, > I am working on a homebrew DBMS and need to prepare both a type 3 and > type 4 driver on my own. I check the tutorial on JavaWorld on type 3 > driver design but lack information on that of type 4. Any one can > suggest valuable tips? Thank you! You haven't provided enough details to give anything more than a general answer. You can do a type 4 JDBC driver if: 1) your DBMS provides a sufficient (lower-level) Java API, or 2) your DBMS provides a standard I/O interface at a level supported by Java, for instance, TCP/IP. Otherwise, you won't be able to write a Type 4 driver. If you are asking for another type of information, please provide more details.  SignatureLee Fesperman, FFE Software, Inc. (http://www.firstsql.com) ============================================================== * The Ultimate DBMS is here! * FirstSQL/J Object/Relational DBMS (http://www.firstsql.com) Hello, I check back the documentation on http://java.sun.com/j2se/1.3/docs/guide/jdbc/getstart/intro.html#1008589, and have no idea what the DBMS-proprietary protocol is, how can I implement my own protocol? > Hello, > I check back the documentation on > http://java.sun.com/j2se/1.3/docs/guide/jdbc/getstart/intro.html#1008589, > and have no idea what the DBMS-proprietary protocol is, how can I > implement my own protocol? The "DBMS-proprietary protocol" is the protocol which client software must use to communicate with the database server i.e. to send queries and commands to the server and to receive status information and result sets from the server. You said in your original post that you were creating a "homebrew DBMS", so one of the first things you must do is design the client/server protocol. You can do it any way you like -- this is *your* DBMS system after all. If you're a little hazy on the concept of a protocol, you might want to read up on client/server systems first. Any of the online tutorials on the SMTP protocol would be a good place to start, since SMTP is a simple client/server protocol that is easy to understand. David Harper Cambridge, England Hi Sam, I think you have not understand the difference between a type 3 driver and a type 4 driver. A type 3 driver requied a separate middle ware server. You have a homebrew DBMS and not a homebrew middle ware server if I understand your email correctly. To answer your question I need the follow infos: - In which language do you have written your DBMS? In Java or any other language like c? - Does you want a server with network interface? Or is it only a local database? Volker Signaturehttp://www.smallsql.de - the 100% pure Java Desktop Database with JDBC > Hello, > I am working on a homebrew DBMS and need to prepare both a type 3 and > type 4 driver on my own. I check the tutorial on JavaWorld on type 3 > driver design but lack information on that of type 4. Any one can > suggest valuable tips? Thank you! Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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