{ "item_title" : "Context-Aware Data Management- An Object-Oriented Version Model", "item_author" : [" Michael Grossniklaus "], "item_description" : "Context-awareness is a requirement of many modern applications. While several solutions exist to gather, represent and process context, very few provide management of context-aware data. In this book, a two-dimensional version model is presented, that allows managing context-dependent variants, while, at the same time, keeping track of the revision history. Queries are processed based on a matching algorithm that uses the current context of the system to select the best object. As an application of this extended database, a content management system has been designed and implemented. This Extensible Content Management System (XCM) provides a flexible platform for web engineering, built on the separation of content, structure, view and presentation. Metadata about these concepts is managed within the extended database and therefore all aspects of a web system become context-aware. Using XCM, a mobile tourist information system (EdFest) was developed. EdFest offers multi-channel interaction through standard web channels and a novel paper-based channel. This book is targeted at developers and researchers in mobile, ubiquitous and pervasive computing as well as in web engineering.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/3/83/642/938/3836429381_b.jpg", "price_data" : { "retail_price" : "85.32", "online_price" : "85.32", "our_price" : "85.32", "club_price" : "85.32", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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