In this video session we demonstrate a graph oriented database management system called GOOD The scheme of a database is represented as a directed graph Also the database instance is conceptually represented as a graph However such an instance graph contains all information stored in the database and is therefore too complicated to be displayed completely on the computer screen in a user friendly way It would be almost impossible to nd the desired information not to men tion how di cult it would be to make directly changes in such a graph Therefore we devel oped a language that simpli es the information retrieval and modi cation
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Gemis et al. (1993) studied this question.
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