Download Data Management in a Connected World: Essays Dedicated to by Andreas Reuter (auth.), Theo Härder, Wolfgang Lehner (eds.) PDF

By Andreas Reuter (auth.), Theo Härder, Wolfgang Lehner (eds.)

Data administration structures play the main the most important function in development huge program s- tems. because sleek purposes aren't any longer unmarried monolithic software program blocks yet hugely versatile and configurable collections of cooperative prone, the knowledge mana- ment layer additionally has to evolve to those new requisites. for this reason, inside contemporary years, information administration platforms have confronted a huge shift from the relevant administration of person documents in a transactional solution to a platform for info integration, fede- tion, seek prone, and knowledge research. This booklet addresses those new concerns within the quarter of knowledge administration from a number of views, within the type of person contributions, and it outlines destiny demanding situations within the context of information administration. those contributions are devoted to Prof. em. Dr. Dr. -Ing. E. h. Hartmut Wedekind at the party of his seventieth birthday, and have been (co-)authored through a few of his educational descendants. Prof. Wedekind is likely one of the such a lot well-known figures of the database administration neighborhood in Germany, and he enjoys a great foreign attractiveness besides. during the last 35 years he tremendously contributed to creating relational database know-how a hit. way back to the early Nineteen Seventies, he covered—as the 1st writer in Germany— the state-of-the-art about the relational version and similar concerns in established textbooks “Datenbanksysteme I” and “Datenbanksysteme II”. with out him, the assumption of modeling complex-structured real-world eventualities in a relational approach will be some distance much less constructed by means of now. between Prof.

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Additional info for Data Management in a Connected World: Essays Dedicated to Hartmut Wedekind on the Occasion of His 70th Birthday

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With the emerging availability of small and portable devices which are able to determine their position and to communicate wirelessly, mobile and spatially-aware applications become feasible. These applications rely on information that is bound to locations and managed by so-called location-based data services. Large-scale location-based systems have to cope efficiently with different types of data (mostly spatial or conventional). Each type poses its own requirements to the data server that is responsible for management and provisioning of the data.

With the emerging availability of small and portable devices which are able to determine their position and to communicate wirelessly, mobile and spatially-aware applications become feasible. These applications rely on information that is bound to locations and managed by so-called location-based data services. Large-scale location-based systems have to cope efficiently with different types of data (mostly spatial or conventional). Each type poses its own requirements to the data server that is responsible for management and provisioning of the data.

Some easy instances of this problem may be dealt with by strategies that rely on syntactic properties only (as described in [3]). Apart from semantic issues, duplicate entries even affect the database technically: if references between (primary key and foreign key) records are made and distinct tuples exist that should have the same key, the ref- 40 Herbert Stoyan et al. erence must fail. This fact is due to the integrity constraints of primary keys: each primary key must be distinct. Database research realized this problem early and developed possible solutions.

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