Liferay 6.2 – Installation Guide

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Hello! In this tutorial I will tell you how to install and configure Liferay 6.2 with Eclipse.

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Convert python object to XML representation

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The application I was working on used a Flash slide show. The configuration on the slide show was done from a xml file. The task was to make this configuration manageable from the Django admin.

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Porting applications from Oracle to PostgreSQL

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If you are planning to migrate a database application from Oracle to PostgreSQL, this article can help you to understand and solve some of the issues occurring in such a process. PostgreSQL has recently become feature-complete in many areas and therefore porting projects from Oracle might be a feasible option in much more cases. Oracle […]

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Django schema migration using South

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Over the developing period of Django web application the models change a lot. Managing these changes in a team environment working on a Django project can become complicated. Unfortunately Django doesn’t capture the changes in the existing models. Until Django will provide an solution to this problem, you will need to use a schema migration […]

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Extending PostgreSQL – A better CONCAT operator

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PostgreSQL users have the option of extending the set of functions and operators available. If you have a common SQL or programmatic routine, custom functions can be an effective way to more succinctly and efficiently accomplish your tasks. Likewise, custom operators can be created to call these functions (or existing built-in functions) in order to […]

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SSH TCP Port Forwarding aka poor man’s VPN

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In today’s world when the IPv4 addresses are a luxury and IPv6 is not wide deployed (yet) more and more servers are running behind NAT-ed addresses. To do remote management on these servers you connect to them using SSH through some port forwarding done on the border gateway. If you need to monitor these servers […]

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Windowing Functions in PostgreSQL 8.4

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PostgreSQL recently added several great new features like Common Table Expressions (CTE), Recursive CTEs, Windowing Functions (my favorite) and Parallel restoring of dumps. The goal of this article is to provide an overview of the new PostgreSQL Windowing Functions. Previously limited to enterprise databases such as Oracle and DB2, they open up a completely new […]

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