POSTGRESQL is an object-relational database developed on the Internet by a group of developers spread across the globe. It is an open-source alternative to commercial databases like Oracle and Informix. This article discusses the concepts needed to write applications using POSTGRESQL. It covers the purpose of databases and how to communicate with them from applications.

POSTGRESQL was originally developed at the University of California at Berkeley. In 1996, a group began development of the database on the Internet. They use email to share ideas and file servers to share code. POSTGRESQL is now comparable to commercial databases in terms of features, performance, and reliability. It has transactions, views, stored procedures, and referential integrity constraints. It supports a large number of programming interfaces, including ODBC, Java (JDBC), TCL/TK, PHP, Perl, and Python. POSTGRESQL continues to improve at a tremendous pace thanks a talented pool of Internet developers.

* Why Use a Database?
* Accessing the Database
* Examples
* Finer Details
o Connection
o Query
o Result
* Conclusion

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