By Stefano Ceri, Piero Fraternali, Stefano Paraboschi (auth.), Carlo Zaniolo, Peter C. Lockemann, Marc H. Scholl, Torsten Grust (eds.)
EDBT 2000 is the 7th convention in a sequence devoted to the development of database expertise. This year’s convention unique subject matter, \Connect hundreds of thousands of clients and knowledge Sources," underscores the significance of databases for the knowledge age that's dawning with the hot millennium. the significance - rives not only from the remark that the knowledge age primarily rests on theconvergenceofcommunications,computing,andstorage.Equallyimportant, a number of the recommendations and strategies underlying the luck of databasesystems have self sufficient which means and impression for today’s dispensed details s- tems. The papers within the quantity also needs to be obvious during this mild. The EDBT 2000 convention application contains 30 study papers chosen via this system committee out of 187 submissions, protecting advances in learn, improvement, and purposes of databases. The convention application additionally - cludes six andapplications papers,a panel discussion,six tutorials,and a number of software program demonstrations. The convention positive aspects 3 uncommon - vited audio system: Ashish Gupta discusses database matters in digital trade, Stefano Ceri addresses the impression and demanding situations of XML on databases, and Andreas Reuter stocks his perspectives on new views on database expertise. The technical contributions offered on the EDBT 2000 convention are colle- ed and preserved during this quantity that we're happy to give to you with the expectancy that it'll function a worthwhile learn and reference instrument on your specialist life.
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Additional info for Advances in Database Technology — EDBT 2000: 7th International Conference on Extending Database Technology Konstanz, Germany, March 27–31, 2000 Proceedings
M[j, 2bj ] bound them. These points are determined such that each interval contains the same number of vectors. Given a point p, a(p, j) denotes d−1 the interval in dimension j into which p falls. A bit-string of length b = j=0 bj represents each cell. Finally, the approximation of p is the bit-string of the cell that contains p. 24 Roger Weber and Klemens B¨ ohm Bounds on the Distance between Query and Data Point. Given the approximation of a data point, we can lower and upper bound the distance between the data point p and the query point q (see Figure 1 (b)): lBnd 2 (p, q) ≤ dist 2 (p, q) ≤ uBnd 2 (p, q) (1) The lower bound lBnd 2 (p, q) is the distance between the query point and the closest point of the cell of p.
Usually, the page cannot be stored at its old position since we enforce a 100% storage utilization of pages. Therefore, it is appended to the end of the index file. g. 90%). Note that in contrast to conventional index structures, the overall storage utilization can never decrease the efficiency of query processing, because empty parts of the index file are not subject to reading operations. By a low storage utilization, we only waste storage memory, but not processing time. 2 Free Storage Management The free storage manager currently observes the storage utilization of the index file.
Search in the DABS-Tree Point queries and range queries are handled in a straightforward way. First, the directory is sequentially scanned. e. containing the query point or intersecting with the query range, respectively) are determined, loaded and processed. Nearest neighbor queries and k-nearest neighbor queries are processed by a variant of the HS algorithm . As the directory is flat, the algorithm can even be simplified, because the active page list (APL) is static in absence of a hierarchy.
Advances in Database Technology — EDBT 2000: 7th International Conference on Extending Database Technology Konstanz, Germany, March 27–31, 2000 Proceedings by Stefano Ceri, Piero Fraternali, Stefano Paraboschi (auth.), Carlo Zaniolo, Peter C. Lockemann, Marc H. Scholl, Torsten Grust (eds.)