The growing popularity of massively accessed Web applications that store and analyze large amounts of data, being Facebook, Twitter and Google Search some prominent examples of such applications, have posed new requirements that greatly challenge traditional RDBMS. In response to this reality, a new way of creating and manipulating data stores, known as NoSQL databases, has arisen. This paper r...

It is now feasible to store previous versions of documents, and not only the most recent version which has been the traditional approach. This is of interest in a number of application, both temporal document databases as well as web archiving systems and temporal XML warehouses. In this paper, we describe describe the architecture and the implementation of V2, a temporal document database syst...

The detection of duplicate images is a useful means of indexing a large database of documents. An algorithm for duplicate document detection is proposed in this paper that operates directly on images that have been symbolically compressed using techniques related to the ongoing JBIG2 standardization e€ort. This paper describes a hidden Markov model (HMM) method that recognizes the text in an im...

The paper consists of two parts. In the first part we introduce a model for structured document databases where we propose Booleanvalued attribute grammars (BAGs) as a query facility. In the second part we show that DOOD technology offers a natural platform on top of which this model as a whole can be conveniently implemented. Each structured document database is mapped to an OO-database and ea...

We propose a plot-based recommendation system, which is based upon an evaluation of similarity between the plot of a video that was watched by a user and a large amount of plots stored in a movie database. Our system is independent from the number of user ratings, thus it is able to propose famous and beloved movies as well as old or unheard movies/programs that are still strongly related to th...

Nowadays, advancements in molecular technology brought better equipments to obtain more DNA sequences in less time, making storage of genomic data a great challenge. As a result, the amount of genomic data generated has been increasing in a way that sequencing a single organism can generate terabytes of information. In general, genomic data processing make use of simple files as the primary mea...

Along with the progress of the cloud computing, it became necessary to deal with various and large quantity data in the distributed database environments. So, the various NoSQL databases have been proposed and put to practical use. However, as for the NoSQL databases, since it supports the distributed environment, the integrity of the database update is basically guaranteed only by the object u...

2 The " Arbeitspapiere der GMD – GMD Technical Reports " primarily comprise preliminary publications, specific partial results and complementary material. In the interest of a subsequent final publication the " Arbeitspapiere/Technical Reports " should not be copied. Critical comments would be appreciated by the authors. No part of this publication may be reproduced or further processed in any ...

2 The " Arbeitspapiere der GMD – GMD Technical Reports " primarily comprise preliminary publications, specific partial results and complementary material. In the interest of a subsequent final publication the " Arbeitspapiere/Technical Reports " should not be copied. Critical comments would be appreciated by the authors. No part of this publication may be reproduced or further processed in any ...

A huge amount of documents is created and changed in our everyday life, so that Version Control Systems like Git or SVN are tightly integrated with documents workflows. On the other hand, XML has come of age as a basis for document formats, and even though XML as a textbased format is suitable for version control in principle, the fact that version control systems work on files makes the integr...