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Understanding Cryptic Schemata in Large Extract-transform-load Systems
Extract-Transform-Load (ETL) tools are used for the creation, maintenance, and evolution of data warehouses, data marts, and operational data stores. ETL workflows populate those systems with data from various data sources by specifying and executing a DAG of transformations. Over time, hundreds of individual workflows evolve as new sources and new requirements are integrated into the system. The maintenance and evolution of large-scale ETL systems requires much time and manual effort. A key problem is to understand the meaning of unfamiliar attribute labels in source and target databases and ETL transformations. Hard-to-understand attribute labels lead to frustration and time spent to devel...
Modeling and enacting complex data dependencies in business processes
Enacting business processes in process engines requires the coverage of control flow, resource assignments, and process data. While the first two aspects are well supported in current process engines, data dependencies need to be added and maintained manually by a process engineer. Thus, this task is error-prone and time-consuming. In this report, we address the problem of modeling processes with complex data dependencies, e.g., m:n relationships, and their automatic enactment from process models. First, we extend BPMN data objects with few annotations to allow data dependency handling as well as data instance differentiation. Second, we introduce a pattern-based approach to derive SQL queries from process models utilizing the above mentioned extensions. Therewith, we allow automatic enactment of data-aware BPMN process models. We implemented our approach for the Activiti process engine to show applicability.
Encyclopedia of Comparative Iconography
First published in 1998. The Encyclopedia of Comparative Iconography compares the uses of iconographic themes from mythology, the Bible and other sacred texts, literature, and popular culture in works of art through various periods, cultures, and genres. Art historians now tend to study narrative themes depicted in works of art in relation to such subjects as gender and sexuality, politics and power, ownership and possession, ceremony and ritual, legitimacy and authority. The Encyclopedia of Comparative Iconography reflects these new approaches by ordering the themes of various iconographic sources in particular biblical, mythological, and literary texts according to these new emphases.Each ...
How China Loses
Tells the story of China's struggles to overcome new risks and endure the global backlash against its assertive reach. Combining on-the-ground reportage with analysis, Luke Patey argues that China's predatory economic agenda, headstrong diplomacy, and military expansion undermine its global ambitions to dominate the global economy and world affairs
Explorative authoring of Active Web content in a mobile environment
Developing rich Web applications can be a complex job - especially when it comes to mobile device support. Web-based environments such as Lively Webwerkstatt can help developers implement such applications by making the development process more direct and interactive. Further the process of developing software is collaborative which creates the need that the development environment offers collaboration facilities. This report describes extensions of the webbased development environment Lively Webwerkstatt such that it can be used in a mobile environment. The extensions are collaboration mechanisms, user interface adaptations but as well event processing and performance measuring on mobile devices.
Daniels' Orchestral Music
Daniels’ Orchestral Music is the gold standard for all orchestral professionals—from conductors, librarians, programmers, students, administrators, and publishers, to even instructors—seeking to research and plan an orchestral program, whether for a single concert or a full season. This sixth edition, celebrating the fiftieth anniversary of the original edition, has the largest increase in entries for a new edition of Orchestral Music: 65% more works (roughly 14,050 total) and 85% more composers (2,202 total) compared to the fifth edition. Composition details are gleaned from personal inspection of scores by orchestral conductors, making it a reliable one-stop resource for repertoire. ...
