This book constitutes the thoroughly refereed proceedings of the 15th Italian Research Conference on Digital Libraries, IRCDL 2019, held in Pisa, Italy, in January/February 2019. The 22 full papers and 5 short papers presented were carefully selected from 42 submissions. The papers are organized in topical sections on information retrieval, digital libraries and archives, information integration, open science, and data mining.
Dieses Buch bietet eine umfassende Einführung in die Theorie und Praxis relationaler Datenbanken. Es beginnt mit einer mathematisch präzisen Darstellung des relationalen Modells und der relationalen Algebra. Darauf basierend wird die Datenbanksprache SQL vorgestellt und anhand zahlreicher praktischer Beispiele besprochen. Weiter werden die grundlegenden Prinzipien des Schemaentwurfs sowie Normalformen fundiert und praxisnah vermittelt. Studierende der Informatik finden hier auch weiterführende Themen, wie logische und physische Query-Optimierung oder Transaktionsverarbeitung, deren Implementierung in der Open-Source-Datenbank PostgreSQL untersucht und mit vielen Beispielen illustriert wird. Dabei behandelt dieses Lehrbuch auch aktuelle Neuerungen wie Serializable-Snapshot-Isolation.
* Offering a native Windows release, PostgreSQL 8.0 is poised to garner considerable market share in the open source arena. This book shows readers how to harness this popular open source database with PHP, the world´s most popular web scripting language. * Essentially three books in one, PostgreSQL 8.0 exposes readers to detailed introductions of PHP and PostgreSQL. Readers gain extensive knowledge about these two popular open source technologies to create powerful websites. * Authored by W. Jason Gilmore, author of the best selling Beginning PHP 5 and MySQL: From Novice to Professional, and noted PostgreSQL developer and community liaison Robert Treat.
Arduino is the hot open source prototyping platform for artists, hobbyists, students, and anyone who wants to create interactive physical environments. Getting Started with Arduino is co-authored by Arduino co-founder Massimo Banzi, and incorporates his experience in teaching, using, and creating Arduino.
An introduction to the open-source machine learning package explains how to install H2O, import and export data, and distinguish H2O algorithms, and explores such machine learning techniques as deep learning, random forests, and ensemble learning.
Open source provides the competitive advantage in the Internet Age. According to the August Forrester Report, 56 percent of IT managers interviewed at Global 2,500 companies are already using some type of open source software in their infrastructure and another 6 percent will install it in the next two years. This revolutionary model for collaborative software development is being embraced and studied by many of the biggest players in the high-tech industry, from Sun Microsystems to IBM to Intel. The Cathedral & the Bazaar is a must for anyone who cares about the future of the computer industry or the dynamics of the information economy. Already, billions of dollars have been made and lost based on the ideas in this book. Its conclusions will be studied, debated, and implemented for years to come. According to Bob Young, ´´This is Eric Raymond´s great contribution to the success of the open source revolution, to the adoption of Linux-based operating systems, and to the
Leverage existing free open source software to build an identity and access management (IAM) platform that can serve your organization for the long term. With the emergence of open standards and open source software, it´s now easier than ever to build and operate your own IAM stack. The most common culprit of the largest hacks has been bad personal identification. In terms of bang for your buck, effective access control is the best investment you can make. Financially, it´s more valuable to prevent than to detect a security breach. That´s why Identity and Access Management (IAM) is a critical component of an organization´s security infrastructure. In the past, IAM software has been available only from large enterprise software vendors. Commercial IAM offerings are bundled as ´´suites´´ because IAM is not just one component. It´s a number of components working together, including web, authentication, authorization, cryptographic, and persistence services. Securing the Perimeter documents a recipe to take advantage of open standards to build an enterprise-class IAM service using free open source software. This recipe can be adapted to meet the needs of both small and large organizations. While not a comprehensive guide for every application, this book provides the key concepts and patterns to help administrators and developers leverage a central security infrastructure. Cloud IAM service providers would have you believe that managing an IAM is too hard. Anything unfamiliar is hard, but with the right road map, it can be mastered. You may find SaaS identity solutions too rigid or too expensive. Or perhaps you don´t like the idea of a third party holding the credentials of your users-the keys to your kingdom. Open source IAM provides an alternative. Take control of your IAM infrastructure if digital services are key to your organization´s success. What You´ll Learn Understand why you should deploy a centralized authentication and policy management infrastructure Use the SAML or Open ID Standards for web or single sign-on, and OAuth for API Access Management Synchronize data from existing identity repositories such as Active Directory Deploy two-factor authentication services Who This Book Is For Security architects (CISO, CSO), system engineers/administrators, and software developers
Mitigate the risks involved in migrating away from a proprietary database platform toward MariaDB´s open source database engine. This book will help you assess the risks and the work involved, and ensure a successful migration. Migrating to MariaDB describes the process and lessons learned during a migration from a proprietary database management engine to the MariaDB open source solution. The book discusses the drivers for making the decision and change, walking you through all aspects of the process from evaluating the licensing, navigating the pitfalls and hurdles of a migration, through to final implementation on the new platform. The book highlights the cost-effectiveness of MariaDB and how the licensing worries are simplified in comparison to running on a proprietary platform. You´ll learn to do your own risk assessment, to identify database and application code that may need to be modified or re-implemented, and to identify MariaDB features to provide the security and failover protection needed by corporate customers. Let the author´s experience in migrating a financial firm to MariaDB inform your own efforts, helping you to develop a road map for both technical and political success within your own organization as you migrate away from proprietary lock-in toward MariaDB´s open source solution. What You´ll Learn Evaluate and compare licensing costs between proprietary databases and MariaDB Perform a proper risk assessment to inform your planning and execution of the migration Build a migration road map from the book´s example that is specific to your situation Make needed application changes and migrate data to the MariaDB open source database engine Who This Book Is For Technical professionals (including database administrators, programmers, and technical management) who are interested in migrating away from a proprietary database platform toward MariaDB´s open source database engine and need to assess the risks and the work involved