guy from Brekke-Strand & and his personal site with some pretty god resources: "This site is dedicated to topics in room acoustics, music acoustics, speech acoustics, perception and their interrelation in general, and concert hall acoustics and stage acoustics in particular."
In December 2017, researchers at Google and MIT published a provocative research paper about their efforts into “learned index structures”. The research is quite exciting, as the authors state in the…
Spring, JPA, and JTA with Hibernate and JOTM
2007-04-24 20:35
have been struggling for a couple of hours today to modify a Spring JPA configuration with a single datasource, Hibernate as the JPA provider and the JpaTransactionManager to a configuration with two XA datasources, Hibernate as the JPA provider, and the JtaTransactionManager with JOTM as the standalone JTA provider.
since the Spring and Hibernate reference manual and Javadoc documentation merely contain a number of hints on how to configure JPA with a JTA transaction manager and others are struggling as well i decided to post how i finally got it to work.
Relational databases define a strict structure and provide a rigid way to maintain data for a software application. Apache's open source CouchDB offers a new method of storing data, in what is referred to as a schema-free document-oriented database model. Instead of the highly structured data storage of a relational model, CouchDB stores data in a semi-structured fashion, using a JavaScript-based view model for generating structured aggregation and report results from these semi-structured documents. CouchDB has been developed from the ground up with Web applications as the primary focus and has its sights on becoming the de-facto database for Web application development.