Showing headlines posted by IdaAshley

ESTO is a tool that tunes the set of parameters for optimizing a specific target program. Expert System for Tuning Optimizations (ESTO) is typically used for tuning, for maximum performance, the optimization options used by a compiler when creating an application. ESTO is currently geared toward tuning GCC and Post-Link Optimization for Linux on POWER.

Databases are happy to handle many parallel requests. However, active processes (threaded or forked) almost inevitably eat up a valuable resource: database connections. Learn how to use the antipool.py module in Martin Blais' antiorm library to make the pooling and reuse of connections transparent to programmers, and in a RDBMS-agnostic fashion.

Learn how to build a self-contained, deployable embedded Apache Derby database application. In this article, the last one in this series, you map database tables into Java classes, write Data Access Objects (DAOs), and combine them with your business logic classes into a complete database application.

In this 12-minute video watch and learn the order of magnitude simplification that XForms can offer to the development of applications that interact with users to collect the XML data that drives back-end business processes.

Google and MapQuest do a great job of creating maps of the outside world on the fly. But what about our workspaces? This article shows how to define and map places and people inside a building. Search, track, and plot individual cubicles, rooms, employees, or assets. Graph the location of individuals or groups of employees based on job function, or track unused office space visually.

Learn how the new XML storage and query environment of DB2 9 for Linux, UNIX, and Windows plays into the XML data model described in Part 1of this series. Part 2 focuses on how to exploit the improved database support for XML in your application architecture.

Java EE 5 is a strong, significant release, making it the most complete platform for enterprise development. This article provides an overview of the new Java EE 5 specification, and its many significant enhancements. Clearly, major steps have been taken to addresses most of the criticisms surrounding past Java development. EJB 3.0 and JPA are powerful and easy to use technologies, and the improvements in JAX-WS make Web service development easier than ever before.

Say you need to debug a pesky problem by running some traces for 30 minutes at midnight, or you would just like to use your Linux system as an alarm clock. This tip helps you stop jobs, such as those started with the cron and at capabilities, after the jobs have run for a certain time, or when some other criteria are met.

Learn how to use gperf for effective command-line processing in your C/C++ code. The GNU tool gperf is a "perfect" hash function that, for a given set of user-provided strings, generates C/C++ code for a hash table, a hash function, and a lookup function.

Aside from having to download a Web server and modules, users starting with PHP struggle with getting code enabled for mash-ups, Ajax applications, and Web feeds. Web 2.0 Starter Toolkit for IBM DB2 is a conveniently packaged set of products and technologies that enable the quick creation of DB2 Web services and feeds using PHP technology.

Examine how to use the Network Information Service (NIS) to share core databases between Linux and UNIX, and how to use the Network File System (NFS) to share file systems, both with direct links and through the automounter. Although UNIX and Linux are similar, there are some differences between the two that can complicate the process of integrating the two systems. Both, for example, share the same authentication system, but most systems are also standalone. Sharing this authentication information enables you to provide a single sign-on (SSO) functionality to any of the servers in your network.

You need to run a job at midnight, daily, or weekly, but you would rather be sleeping, or enjoying life some other way. This tip helps you use the cron and at capabilities to schedule jobs periodically or at a single future time, so you can sit back and let routine tasks happen automatically and consistently while you enjoy life.

In this article, I provide a survey of a number of popular Linux data visualization tools and include some insight into their other capabilities. Finally, I identify the strengths of each tool to help you decide which is best for your application. The open source tools that I explore in this article are gnuplot, GNU Octave, Scilab, MayaVi, Maxima, and OpenDX.

The Apache Pluto project is the reference implementation of the Java Portlet Specification. Find out how combining the Pluto project with Apache Geronimo's Java Platform, Java EE platform creates a highly flexible and powerful environment for building customizable and manageable systems using portals and portlets.

[The screenshots in this tutorial are from Windows, but it works the same under Linux ofcourse. - Sander]

This tutorial is the second in a two-part series on locking your Linux machines down to streamline the associated support and administration processes. In this tutorial, you learn how to configure the Linux kernel to execute only signed binaries. This tutorial expands on the groundwork laid in Part 1, which gave some good reasons for keeping Linux's propensity for customization under control and took the first cautious steps toward locking down a standard Linux distribution to prevent spurious user changes to the baseline installation.

Aside from Java IDE, Eclipse can also work with PHP, Ruby, and Groovy, C, and C++. In this article, you will learn how to build and develop applications in C++ using the Eclipse C/C++ Development Toolkit (CDT), and Standard Template Library (STL). This allows you to streamline the process and take advantage of powerful features C++ offers. This article, which is a follow-up to "C/C++ development with the Eclipse Platform," is intended for C++ developers who want to learn C++ development using the Eclipse CDT.

XForms is a standardized technology that offers many simplification and optimizations that are complimentary to Ajax. In this article you will see some of the benefits of using Ajax and XForms together by implementing an autosuggest-form field, widely used today in web applications.

Prepare for your Linux certification or build fundamental skills on Linux systems administration. In this sixth installment from a series of nine tutorials on exam 102 topics, you will know how to manage users and groups, set user profiles and environments, use log files, schedule jobs, back up your data, and maintain the system time.

The rise of JavaScript Object Notation (JSON) has gone hand-in-hand with the rise of Ajax. JsonML is an extension of JSON that enables you to map XML data using JSON type markup, and this in turn enables you to easily create XML or XHTML data based on JSON markup and to build and exchange user interface (UI) elements.

This third article from the DB2 and Ruby on Rails series shows you how testing works in a DB2 on Rails environment, and how easy it is to write tests within the Ruby on Rails framework. In Part 1, we introduce the IBM_DB Ruby driver, Rails migration, and a Team Room application. In Part 2, you can learn how to build on the existing Team Room application to take advantage of DB2 pureXML support in a Rails application.

Related Links

• DB2 Express-C 9 (no-charge database)
• DB2 Enterprise 9