Download Advanced Information Systems Engineering: 15th International by Marek Rusinkiewicz (auth.), Johann Eder, Michele Missikoff PDF

By Marek Rusinkiewicz (auth.), Johann Eder, Michele Missikoff (eds.)

ISBN-10: 3540404422

ISBN-13: 9783540404422

This booklet constitutes the refereed lawsuits of the fifteenth foreign convention on complex info platforms Engineering, CaiSE 2003, held in Klagenfurt, Austria in June 2003.

The forty five revised complete papers offered including three invited contributions have been conscientiously reviewed and chosen from 219 submissions. The papers are geared up in topical sections on XML, equipment and types for info structures, UML, net enterprise and social modeling, peer-to-peer structures, ontology-based equipment, complicated layout of knowledge platforms, wisdom, wisdom administration, net prone, facts warehouses, digital agreements and workflow, necessities engineering, metrics and procedure engineering, and agent applied sciences and complicated environments.

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Extra resources for Advanced Information Systems Engineering: 15th International Conference, CAiSE 2003 Klagenfurt/Velden, Austria, June 16–20, 2003 Proceedings

Example text

1) there does not exists a path w ¯1 . w ¯n in P aths(q) such that val(w ¯n ) = val(w ¯n ) and there does not exist a node z2 in N odes(x11 , r) such that val(z2 ) = val(z1 ) and there does not exist a node z4 in N odes(x111 , pl ) such that val(z4 ) = val(z4 ); Consider then the paths v¯1 . v and w ¯1 . w ¯n in P aths(q) in T . Since p is a key and q ∩ r = p, then x11 = x11 = y11 = x11 and x111 = x111 = y111 = y111 . Hence if T violates p →→ q|r then so will T which is a contradiction. The same argument applies if v ∈ N (r) and so we conclude that Σ does not cause redundancy.

The said to be a prefix of v¯1 . ¯ path instance v¯1 . ¯ vn is said to be a strict prefix of v¯1 . ¯ vm if n < m and v¯i = v¯i for all i, 1 ≤ i ≤ n. v4 We now assume the existence of a set of legal paths P for an XML application. Essentially, P defines the semantics of an XML application in the same way that a set of relational schema define the semantics of a relational application. P may be derived from the DTD, if one exists, or P be derived from some other source which understands the semantics of the application if no DTD exists.

However, if we let z1 = z1 and z3 = z3 then z1 in N odes(s11 , r) and val(z1 ) = val(z2 ) and z3 in N odes(s111 , p) and val(z3 ) = val(z3 ) so (a) of the definition of an XMVD is satisfied. Similarly, if we let z2 = z2 and z4 = z4 then z2 in N odes(t11 , r) and val(z2 ) = val(z1 ) and z4 in N odes(t111 , p) and val(z4 ) = val(z4 ) so (b) of the definition of an XMVD is satisfied. 1) is satisfied since p →→ q|r is violated in T and so we conclude that v¯1 . ¯ vn must be distinct from v¯1 . v. However, by (a) above val(¯ vn ) = val(¯ vn ) = val(v) which contradicts the fact that q is a key.

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