Saturday, February 2, 2008

MYSQL PART I

Database :A database is a collection of data that is organized so that its contents can be easily accessed, managed and updated. The software used to manage and query a database is known as a Database Management System (DBMS). Then came the concept of Relational Database Management System(RDBMS). Relational database is a database where data are stored in more than one table, each one containing different types of data. The different tables can be linked so that information from the separate files can be used together. This is explained below using an example.Example :Consider the Student's personal information and the test marks in a school. Suppose the student's infomation and test results are stored seperately, we can get information regarding the student's personal information like Address...

Thursday, January 31, 2008

Packet Stream XML-RPC

In addition to providing facilities for your program to speak the standard XML-RPC language, XML-RPC For C/C++ provides facilities for a variation on the standard that works in some applications for which XML-RPC is insufficient, and is much faster. We call it packet stream XML-RPC.Packet stream XML-RPC does not use HTTP, as regular XML-RPC does. Packet stream XML-RPC has a concept of a long-lived client/server connection and you perform multiple RPCs over a single connection. That connection is typically a TCP connection. One advantage of packet stream XML-RPC over regular XML-RPC is that a communicant can discover when its partner dies, no matter how violently, because the connection goes away. So for example, you could have a client that turns a machine on and off by sending RPCs to it....

Monday, January 28, 2008

A tutorial on character code issues

The basicsIn computers and in data transmission between them, i.e. in digital data processing and transfer, data is internally presented as octets, as a rule. An octet is a small unit of data with a numerical value between 0 and 255, inclusively.The numerical values are presented in the normal (decimal) notation here, but notice that other presentations are used too, especially octal (base 8) or hexadecimal (base 16) notation. Octets are often called bytes, but in principle, octet is a more definite concept than byte. Internally, octets consist of eight bits (hence the name, from Latin octo 'eight'), but we need not go into bit level here. However, you might need to know what the phrase "first bit set" or "sign bit set" means, since it is often used. In terms of numerical values of octets,...