Embedded databases run directly within the application process that uses them. They do not require a
separate process or server, since the database code is linked directly into the application's address space.
The most significant advantage that an embedded database has over a client/server system is speed. Because
all database operations happen within the application process, an embedded database incurs none of the
overhead that inter-process communication imposes. Also, because there is no separate server, applications
based on embedded databases are typically easier for end users to install and administer.
Berkeley DB XML is an open-source embedded XML database for applications that need XML document
management services. It provides transaction-protected storage of XML documents and an optimizing XPath
query processor for efficient document retrieval. It supports both C++ and Java APIs, UTF-8 encoded XML
documents, and XPath queries. It is also able to participate in local and distributed transactions (XA), and
supports both multi-threaded and multi-process application architectures.
Berkeley DB XML is built on top of Berkeley DB, the embedded data management system, and provides all of
the high-performance, reliability, concurrency, and scalability of Berkeley DB. It is available as a
source-code distribution (see www.sleepycat.com), and is released
under an open source license. Open source applications may freely redistribute Berkeley DB XML, but
proprietary applications must purchase a binary distribution license from Sleepycat Software.
A Dating Service
Figure 1: Architecture of the dating service
In this article, I describe the design and implementation of a sample application that demonstrates the
features of Berkeley DB XML.
Extending Enterprise Value with Web 2.0 In this webcast we will talk about how to simply build and quickly remix Web 2.0 applications and the role of the IT department and how they support mashups. We will discuss how IBM can help IT teams adapt existing enterprise systems as well as develop unique ones that can support end user driven mashups in a reliable, scalable and secure way. We will highlight a simple scenario adapting an enterprise information source for mashups and how to test it. We will also cover how IBM can help you build agile, fast and simple web applications based on dynamic scripting languages that dramatically reduces development time. Wednesday, September 24, 2008 - 12pm PT / 3pm ET
2008 International Mathematica Conference Dr. Dobb's interviews Wolfram Research's Theo Gray, co-founder and Director of User Interfaces, and Roger Germundsson, Director of Research and Development, about the upcoming 2008 International
Mathematica Conference.
In this volume of Best of BYTE, we explore the emergence of some heuristic algorithms. Although we have only scratched the surface of this intriguing subject, we hope we've suggested the potential of the synthesis of heuristics and algorithms.
Understand C/C++ code in less time. A new team member ? Inherited legacy code ? Get up to speed faster with Crystal Flow for C/C++. Code-formatting improves readability. Flowcharts are integrated with code browser. Export flowcharts to Visio.
