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Middleware at HVA Assignment 4.5 Brian Samson & Peter Troon.

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Presentation on theme: "Middleware at HVA Assignment 4.5 Brian Samson & Peter Troon."— Presentation transcript:

1 Middleware at HVA Assignment 4.5 Brian Samson & Peter Troon

2 Introduction n Assignment: Take a closer look at the middleware, which is needed to make a connection between a client machine and the database server at school.

3 Types of Middleware n Remote Data Access (RDA) n Remote procedure calls (RPC’s) n Message-oriented middleware (MOM) n Object Request Brokers(ORB’s) i.e. CORBA n Distributed transaction processing (DTP)

4 Our School’s Situation n Microsoft SQL Server running on a Windows NT Machine n A client running on a Windows 95 Computer n Database is used for user account data, user rights, etc.

5 What do we need? n A client program n A DBMS n A RDA standard. In our case: ODBC n A database server n A good functioning network.

6 The Client/Server Model

7 Remote Request What happens if someone wants to perform an operation on the database server?

8 Overview of ODBC

9 Conclusion Except the hardware necessary to make a network connection you need software, that supports the RDA protocol if you want make a database connection between a client and a database server. In most cases an ODBC driver is used.

10 Questions 1.What is Middleware? 2.How is a database connection between a client and a server established? 3.What is the advantage of ODBC?

11 Resources n Distributed Information Systems from Client/Server to Distributed Multimedia Errol Simon, ISBN 0 07 709076 4 n Microsoft SQL Server 6.5 Second Edition Solomon, Rankins, et al., ISBN 0-672-30956-4

12 Middleware at HVA …. The End http://www.troon.org/middleware/


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