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The modeling language enables designing database structures in the AODB Metamodel, taking into account various features of this database metamodel. The language in question is fully integrated and compatible with AODB Metamodel. It has been developed for the purposes of this metamodel, it operates with categories specific to it and, as such, it constitutes neither a version nor an extension of any of the existing languages. The second part of the paper provides the definition and discussion concerning the graphical modeling language \u2014 Association-Oriented Modeling Language (AML). The last section of the paper introduces the case-study that presents the key features of the metamodel, as well as the use of modeling language. The topics of presented examples comprise a simplified model of degree programs for universities and the model of Ontological Core, the main module of Semantic Knowledge Base (SKB).<\/jats:p>","DOI":"10.1142\/s2196888819500052","type":"journal-article","created":{"date-parts":[[2018,12,17]],"date-time":"2018-12-17T00:59:47Z","timestamp":1545008387000},"page":"91-145","source":"Crossref","is-referenced-by-count":7,"title":["Formal Definition and Modeling Language of Association-Oriented Database Metamodel (AssoBase)"],"prefix":"10.1142","volume":"06","author":[{"given":"Marek","family":"Kr\u00f3tkiewicz","sequence":"first","affiliation":[{"name":"Faculty of Computer Science and Management, Wroc\u0142aw University of Science and Technology, Wybrze\u017ce Stanis\u0142awa Wyspia\u0144skiego 27, 50-370 Wroc\u0142aw, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2019,5,22]]},"reference":[{"key":"S2196888819500052BIB001","doi-asserted-by":"publisher","DOI":"10.1145\/362384.362685"},{"key":"S2196888819500052BIB003","doi-asserted-by":"publisher","DOI":"10.1109\/MAHC.2012.50"},{"key":"S2196888819500052BIB004","doi-asserted-by":"publisher","DOI":"10.1109\/MAHC.2012.48"},{"key":"S2196888819500052BIB005","first-page":"256","volume-title":"2011 Int. 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