Atdhe Buja MSc is a certified ethical hacker, DBA (MCITP, OCA11g), and manager with good management skills. He is a DBA at the Ministry of Public Administration, Pristina, Republic of Kosovo, where he manages some e-governance projects. He has 10 years of experience in databases and SQL Server.

Atdhe is an active contributor to the Albanian ICT Awards (www.ictawards.com) and is a regular columnist for the newspaper of University for Business and Technology, Pristina. He holds an MSc in computer science and engineering and a bachelor's in management and information. He is pursuing a bachelor's in political science at the University of Pristina.

He specializes in, and is certified in, many technologies such as SQL Server 2000-2005-2008 R2, Oracle 11g, CEH, Windows Server, Microsoft Project, System Center, and BizTalk Server.

Jérôme Étévé is a full stack web application developer with a wide range of technological interests. After getting a master's degree in bioinformatics from the University of Lille, France, in 2002, he began developing web applications for the corporate sector and the general public, which he has been doing until now. He currently works at Broadbean, a recruitment technology company in London. He regularly creates and shares open source software on his GitHub account (jeteve), and he has reviewed the last two Solr Enterprise Server books by Packt Publishing. As far as RDBMS systems are concerned, he is a keen advocate and enthusiastic user of PostgreSQL.

Piotr Isajew is a mobile technology expert with several years of expertise in mobile and messaging projects. He gained his skills while working for media and mobile marketing companies, and now he runs his own IT consulting business.

Piotr's first encounter with PostgreSQL was in 1997, and after a short trial period, it became his RDBMS of choice. Since then, he has used PostgreSQL in every server-side project he has been responsible for and knows it well from both the administration and application development perspectives.

Piotr can be contacted by e-mail at <[email protected]>.

Dmitry Spikhalskiy is currently a software engineer at the Russian social network, Odnoklassniki, and is working on a search engine, video recommendation system, and movie content analysis.

Previously, Dmitry took part in developing Mind Labs' platform, infrastructure, and benchmarks for high-load videoconferencing and streaming services, which entered the Guinness Book of World Records as "The biggest online training in the world", with more than 12,000 participants. He launched a mobile social banking start-up, called Instabank, as a technical lead and architect. He has also reviewed Learning Google Guice, Packt Publishing.

Dmitry has graduated from Moscow State University with an MSc degree in computer science, where he first developed an interest in parallel data processing, high-load systems, and databases.

Enrique Vidal is a software engineer from Tijuana. He has worked on web development and system administration for many years, and he focuses on Ruby and CoffeeScript development these days.

Enrique feels fortunate to work alongside great developers such as this book's author and in different companies in the United States and México. He enjoys challenges such as coding payment systems, online invoicing, and social networking applications. He is fond of helping start-ups at an early stage and actively supporting open source projects.

Qingqing Zhou has worked on database engine implementation for more than 15 years. He has hands-on experience in academic prototypes, database startup, PostgreSQL, and Microsoft SQL Server's internals, particularly in terms of performance and scalability. He is currently leading an effort in Huawei to build a cloud-scale parallel database system, targeting a wide spectrum of interactive analytical applications. In his spare time, Qingqing enjoys arts, soccer, fishing, hiking, family time, and everything that has elegance.