Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Second normal form"'
Publikováno v:
Advances in Computer Science for Engineering and Education III ISBN: 9783030555054
The task of designing relational databases has always been the subject of scientific research, as it is associated with a number of interrelated steps. The result of each step is the development of models for presenting the future database with furth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::081f6429e30c71a744d7c451f565630c
https://doi.org/10.1007/978-3-030-55506-1_27
https://doi.org/10.1007/978-3-030-55506-1_27
Publikováno v:
International Journal on Software Tools for Technology Transfer
International Journal on Software Tools for Technology Transfer, Springer Verlag, 2019, 21 (6), pp.691-707. ⟨10.1007/s10009-019-00534-2⟩
International Journal on Software Tools for Technology Transfer, Springer Verlag, 2019, 21 (6), pp.691-707. ⟨10.1007/s10009-019-00534-2⟩
International audience; Delta-Oriented Programming (DOP) is a flexible transfor-mational approach to implement Software Product Lines (SPLs). In delta-oriented SPLs, variants are generated by applying operations contained in delta modules to a base p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::392a1293be4e66f34eed156d0c28f283
http://hdl.handle.net/2318/1717330
http://hdl.handle.net/2318/1717330
Publikováno v:
Journal of Symbolic Computation
Journal of Symbolic Computation, 2016
Journal of Symbolic Computation, Elsevier, 2016
Journal of Symbolic Computation, 2016
Journal of Symbolic Computation, Elsevier, 2016
International audience; This paper presents two new normal forms for fractions ofdifferential polynomials, as well as algorithms for computingthem. The first normal form allows to write a fraction as thederivative of a fraction plus a non integrable
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::247a92a563027f9c22bf800dbde3586e
https://doi.org/10.1016/j.jsc.2016.01.002
https://doi.org/10.1016/j.jsc.2016.01.002
Autor:
Cai Xia Ma, Yan Min Wang
Publikováno v:
Applied Mechanics and Materials. :1809-1812
The library database design needs to accord certain rules, in relational database, this rule is paradigm. Paradigm is in line with a certain level of relational schema collections. Relational database relationship must meet certain requirements, name
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f0e56d00b8dda6699d589bfd226f368
https://doi.org/10.4028/www.scientific.net/amm.401-403.1809
https://doi.org/10.4028/www.scientific.net/amm.401-403.1809
Autor:
Jan L. Harrington
This chapter covers the process of transforming an ER diagram into a well-designed relational database. For each normal norm, the chapter presents the rules that relations must meet to reach that normal form, and the design problems that may remain.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4d7cb3bbaca26e62e6778b012708dd9
https://doi.org/10.1016/b978-0-12-804399-8.00007-7
https://doi.org/10.1016/b978-0-12-804399-8.00007-7
Publikováno v:
Issues in Informing Science and Information Technology, Vol 8, Pp 277-291 (2011)
Introduction Designing database is an art process similar to building a house. Database designers always face the problems of designing a relational database that will be free of database anomalies. These anomalies bring repetition of tuples that del
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3b72dad4529934fdc906478d653cc50
https://doi.org/10.28945/1418
https://doi.org/10.28945/1418
Autor:
V. V. Khodorovskii
Publikováno v:
Programming and Computer Software. 28:41-52
A new normal form, namely, object-normal form (ONF), is introduced. It is shown that the existing definitions of the fifth normal form (5NF) are unsatisfactory. The correct definition is given for the first time. The importance of the 5NF is demonstr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42febfad4bc1c1926b41f8acd01224af
https://doi.org/10.1023/a:1013759617481
https://doi.org/10.1023/a:1013759617481
Autor:
George Loizou, Mark Levene
Publikováno v:
ACM Transactions on Database Systems. 24:80-126
Although there has been a vast amount of research in the area of relational database design, to our knowledge, there has been very little work that considers whether this theory is still valid when relations in the database may be incomplete. When re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::296675c3defee384c0d2600b32fe0888
https://doi.org/10.1145/310701.310712
https://doi.org/10.1145/310701.310712
Autor:
Lương Cao Sơn, Vũ Đức Thi
Publikováno v:
Journal of Computer Science and Cybernetics. 16
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f63e5cfdcd425c9ac06fec7a0481cb5
https://doi.org/10.15625/1813-9663/16/2/2865
https://doi.org/10.15625/1813-9663/16/2/2865
Autor:
János Demetrovics, Vu Duc Thi
Publikováno v:
Discrete Applied Mathematics. 69(1-2):61-74
In this paper we present some characterizations of relation schemes in second normal form (2NF), third normal form (3NF) and Boyce-Codd normal form (BCNF). It is known [6]that the set of minimal keys of a relation scheme is a Sperner system (an antic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d48e5654595b1f012e7ad80ef58e76e8