Academic literature on the topic 'Relational Paradigm Mismatch'
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Journal articles on the topic "Relational Paradigm Mismatch"
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Colley, Derek, Clare Stanier, and Md Asaduzzaman. "Investigating the Effects of Object-Relational Impedance Mismatch on the Efficiency of Object-Relational Mapping Frameworks." Journal of Database Management 31, no. 4 (2020): 1–23. http://dx.doi.org/10.4018/jdm.2020100101.
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The object-relational impedance mismatch (ORIM) problem characterises differences between the object-oriented and relational approaches to data access. Queries generated by object-relational mapping (ORM) frameworks are designed to overcome ORIM difficulties and can cause performance concerns in environments which use object-oriented paradigms. The aim of this paper is twofold, first presenting a survey of database practitioners on the effectiveness of ORM tools followed by an experimental investigation into the extent of operational concerns through the comparison of ORM-generated query performance and SQL query performance with a benchmark data set. The results show there are perceived difficulties in tuning ORM tools and distrust around their effectiveness. Through experimental testing, these views are validated by demonstrating that ORMs exhibit performance issues to the detriment of the query and the overall scalability of the ORM-led approach. Future work on establishing a system to support the query optimiser when parsing and preparing ORM-generated queries is outlined.
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Budiman, Edy, and Novianti Puspitasari. "Model View Controller dan Object Relational Mapping Data Borneo Biodiversity Information System." Jurnal Rekayasa Teknologi Informasi (JURTI) 2, no. 2 (2018): 153. http://dx.doi.org/10.30872/jurti.v2i2.1869.
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Pergeseran paradigma pengembangan Perangkat Lunak yang berskala enterprise. Permasalahan antara lingkungan Berorientasi Objek (OOP) dengan lingkungan RDBMS (Relational Database Management System) yang sering disebut dengan istilah impedance mismatch (Ketidak-sesuaian pendekatan OOP dan RDBMS). Penelitian ini bertujuan menerapkan konsep Object Relational Mapping (ORM) yang berfungsi menjembatani ketidaksesuaian dan memetakkan database relasional ke model objek, melakukan pengumpulan data tumbuhan (Pohon, Kayu, Tanaman Obat dan Bambu). Metode pengembangan menggunakan konsep design pattern Model-View-Controller (MVC) berbasis Framework. Metode penamaan dan taksonomi tumbuhan mengacu pada International Association for Plant Taxonomy. Penelitian ini telah menghasilkan sebuah produk perangkat lunak Sistem Informasi Keanekaragaman Hayati Borneo, telah tersimpan data dalam database sistem 1482 jenis pohon, 233 jenis tumbuhan hutan obat, 86 jenis kayu dan 80 jenis bambu. Relevansi penelitian ini sebagai bentuk sinergitas penelitian yang mengacu pada Pola Ilmiah Pokok (PIP) Universitas Mulawarman sebagai Center of Excellence for Tropical Studies.
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Ringstrom, Philip A. "L'approccio relazionale intersoggettivo al trattamento congiunto." INTERAZIONI, no. 2 (December 2009): 30–54. http://dx.doi.org/10.3280/int2008-002004.
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- Philip Ringstrom proposes a couples therapy model based on the intersubjective and relational paradigm whose goal is to enable two "‘real selves' to intimately connect under that same roof", and at the same time the partners become able to repair the inevitable ruptures and to overcome the mismatches that arise from both the similarities and the differences between two subjects in a relationship. Ringstrom's treatment model is organized in six non-linear steps, like Escher's ascending and descending staircases. It is outlined in three basic points: - self actualisation; - mutual recognition; - the development of a relational mind of its own. Ringstrom's Conjoint treatment also shows us the progress of psychoanalytic theory beginning with Freud (where there is Es, there will be Ego), through Ego Psychology (where there is Ego, there will be objects), until Benjamin's latest formulations (where there are objects, there will subjects).
Dissertations / Theses on the topic "Relational Paradigm Mismatch"
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Persson, Henrik, and Andreas Nilsson. "En jämförande studie av JDBC och Hibernate med avseende på användbarhet." Thesis, Malmö högskola, Teknik och samhälle, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20152.
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Två grundläggande paradigm inom datavetenskap är objektorienterad programmering och relationsdatabasteknik. En kombinering av applikationer gjorda i ett objektorienterat programmeringsspråk med den beständighet och funktionalitet som ges av relationsdatabaser är en möjlig vidareutveckling av ens kunskaper inom dessa områden. Kombinationen av dessa båda förutnämnda paradigm innebär åtminstone ett problem som uppkommer då en relationsdatabas lagrar data i tabeller och en objektorienterad applikation lagrar data i objekt. Detta problem kallas objekt/relations paradigmens missanpassning. På grund av detta problem så måste kopplingen mellan paradigmen skötas av ett ramverk av något slag. I vår rapport så undersöker vi två av de ramverk som behandlar kopplingen mellan paradigmen. Specifikt i våran studie kommer vi att fokusera på kvalitetsattributet användbarhet. De ramverk som vi undersöker heter Java Database Connectivity (JDBC) och Hibernate. Båda dessa verktyg är skapade för det objektorienterade programmeringsspråket Java.<br>Two of the fundamental paradigms within computer science are object oriented programming and relational databases. A combination of an object oriented application with the persistence and functionality provided by relational databases is a further development of one’s knowledge within these areas. The combination of the two aforementioned paradigms will yield at least one problem, which occurs because in a database data is stored in tables whereas an object oriented application stores data in objects. This problem is called the object/relational paradigm mismatch. Because of this problem the connection between the paradigms must be handled by some kind of framework. In our report we investigate two of the frameworks which handle the connection between the paradigms. Specifically in our study we will focus on the quality attribute usability of the two frameworks and conduct a comparison between these two. The frameworks we investigate are called Java Database Connectivity (JDBC) and Hibernate. Both of these tools are created for the object oriented programming language Java.
Book chapters on the topic "Relational Paradigm Mismatch"
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Zendulka, Jaroslav. "Object-Relational Modeling." In Handbook of Research on Innovations in Database Technologies and Applications. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-242-8.ch019.
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Modeling techniques play an important role in the development of database applications. Well-known entity-relationship modeling and its extensions have become a widely-accepted approach for relational database conceptual design. An object-oriented approach has brought a new view of conceptual modeling. A class as a fundamental concept of the object-oriented approach encapsulates both data and behavior, whereas traditional relational databases are able to store only data. In the early 1990s, the difference between the relational and object-oriented (OO) technologies, which were, and are still used together to build complex software systems, was labeled the object-relational impedance mismatch (Ambler, 2003). The object-oriented approach and the need of new application areas to store complex data have greatly influenced database technology since that time. Besides appearance of object-oriented database systems, which fully implement objectoriented paradigm in a database environment (Catell et al., 2003), traditional relational database management systems become object-relational (Stonebraker & Brown, 1999). The most recent versions of the SQL standard, SQL: 1999 (Melton & Simon (2001) and SQL: 2003 (Eisenberg et al., 2004), introduced object-relational features to the standard and leading database producers have already released packages which incorporate them.
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Hart, Allan M. "Hibernate." In Handbook of Research on Modern Systems Analysis and Design Technologies and Applications. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-59904-887-1.ch025.
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This chapter presents a brief overview of the object/relational mapping service known as Hibernate. Based on work provided in the book Java Persistence with Hibernate, it is argued that the paradigm mismatch problem consists of five problems: the problem of granularity, the problem of subtypes, the problem of identity, the problem of associations, and the problem of data navigation. It is argued that Hibernate, if it is to be considered a successful object/relational mapping service, must solve the paradigm mismatch problem and, hence, each of the five problems noted above. A simplified version of an order entry system is presented together with the mapping files required to store persistent objects to a database. Examples are given for one-to-one, one-to-many, and many-to-many mappings. The distinction between value and entity types is explained and the mapping technique required for value types is introduced into the order entry system application. The n+1 selects problem is explained and a strategy for solving that problem using Hibernate’s support for lazy, batch, and eager fetching strategies is discussed.