Reverse pivoting in conceptual information systems

In database marketing, the behavior of customers is analyzed by studying the transactions they have performed. In order to get a global picture of the behavior of a customer, his single transactions have to be composed together. In On-Line Analytical Processing, this operation is known as reverse pivoting. With the ongoing data analysis process, reverse pivoting has to be repeated several times, usually requiring an implementation in SQL. In this paper, we present a construction for conceptual scales for reverse pivoting in Conceptual Information Systems, and also discuss the visualization. The construction allows the reuse of previously created queries without reprogramming and offers a visualization of the results by line diagrams.

Information systems for you.

Cumple con los requisitos exigidos en la materia de Tecnologías de la Información y Comunicación (TIC) para la preparación del General Certificate Secondary Education (GCSE) en el Reino Unido. El objetivo de este libro es el conocimiento de los sistemas de información y el desarrollo de las habilidades en este área. Se divide en dos secciones: la primera parte, del capítulo uno al veintiséis abarca la parte teórica del programa: definición, características y componentes de los sistemas de información, hardware, software, sistemas de seguridad, bases de datos, transferencia de datos y sus aplicaciones en distintos sectores (educación, salud, oficinas), internet. En la segunda parte, de los capítulos veintisiete al treinta y cuatro, hay tareas prácticas con ejercicios sobre programas de procesamiento de textos, hojas de cálculo, paquetes gráficos, autoedición. Va acompañado del libro del profesor.

Information systems for you. Teacher support pack.

Este recurso para el profesor ayuda en la preparación de clases, ofrece ideas para lecciones y actividades basadas en el libro del alumno, así como, material diseñado para maximizar la utilidad del libro del alumno y que, además, puede ser fotocopiado. Cumple con los requisitos exigidos en la materia de Tecnologías de la Información y Comunicación (TIC) para la preparación del General Certificate Secondary Education (GCSE) en el Reino Unido.

Database Engines for Geographical Information Systems

Our ability to identify, acquire, store, enquire on and analyse data is increasing as never before, especially in the GIS field. Technologies are becoming available to manage a wider variety of data and to make intelligent inferences on that data. The mainstream arrival of large-scale database engines is not far away. The experience of using the first such products tells us that they will radically change data management in the GIS field.

Testing solutions in grass-dominated landscapes: a review of current research

In this paper we review the experimental development of agri-environment measures for use on grasslands. Sward structure has been shown to have a strong influence on birds' ability to forage in grasslands, but the effects of food abundance on foraging behaviour are poorly understood and this hinders development of grassland conservation measures. The experiments described have a dual purpose: to investigate the foraging ecology of birds on grasslands and to test candidate management measures. Most of the work featured focuses on increasing invertebrate food resources during the summer by increasing habitat heterogeneity. We also identify important gaps in the habitats provided by existing or experimental measures, where similar dual-purpose experiments are required.