In temporal document databases and temporal XML databases, temporal text-containment queries are a potential performance bottleneck. In this paper we describe how to manage documents and index structures in such databases in a way that makes temporal textcontainment querying feasible. We describe and discuss different index structures that can improve such queries. Three of the alternatives hav...

During the current Covid-19 pandemic, it is necessary to have facilities track community activities make easier cope with pandemic situation which still a threat community. Contact tracing application (Contact Tracing) one solution that can be used in this regard. By utilizing Tracing, people's recorded when traveling meet other people so they generate history someone if of them infected Covid-...

Big data is a broad term for data sets so large or complex that traditional data processing applications are inadequate. Challenge sinclude analysis, capture, data curation,search, sharing, storage, transfer, visualization, querying andinformation privacy. The term often refers simply to the use of predictive analytics or certain other advanced methods to extract value from data, and seldom to ...

The exceptional development of electronic device technology, the miniaturization of mobile devices, and the development of telecommunication technology has made it possible to monitor human biometric data anywhere and anytime by using different types of wearable or embedded sensors. In daily life, mobile devices can collect wireless body area network (WBAN) data, and the co-collected location d...

As the Internet of Things (IoT) is becoming an increasingly trendy topic both for individuals, businesses and governments, the need for academically reviewed and developed prototypes focusing on certain aspects of IoT are increasing as well. Throughout this paper we propose an architecture and a technology stack for creating real-time applications focusing on time-series data generated by IoT d...

Owing to the huge amount of data in websites to be analysed, web innovative services are required to support them with high scalability and availability. The main reason of using NoSQL databases is for considering the huge amount of data and expressing large-scale distributed computations using Map-Reduce techniques. To enhance the service quality of customers and solve the problems of the huge...

Today the demand for Carriage of Dangerous Goods is experiencing significant increase on Moroccan market. Each year, more than 15 million tons of dangerous goods are transported by road in Morocco. The transport of dangerous goods is regulated by a legal framework in line with international standards; including the European Agreement concerning the International Carriage of Dangerous Goods by R...

This paper presents a novel approach for mapping an existing object-oriented database into XML and vice versa. The major motivation to carry out this study is the fact that it is necessary to facilitate platform independent exchange of the content of object oriented databases and the need to store XML in a structured database. There are more common features between the object-oriented model and...

Structured document retrieval has established itself as a new research area in the overlap between Database Systems and Information Retrieval. This work proposes a filtering technique, that can be added to already existing index structures of many structured document retrieval systems. This new technique takes the contextual structure information of query and document database into account and ...

The corporate world must take advantage of the trillions of dollars worth of intangible assets (in the form of knowledge) it possesses. Specialized Knowledge Management Systems (KMSs) are being developed to leverage these assets, and a critical issue is finding the most effective way for users to retrieve needed information from organizational knowledge stores. Research has detailed the problem...