A study on the application of a deductive database to a CAD system

本研究旨在利用演绎数据库技术改进现有数据库管理系统的设施。首先，我们将这些技术应用到一个CAD系统中，并取得了一些成功。基因组数据库需要存储和管理比CAD数据库处理的数据更大、更复杂的数据。此外，对基因组信息的分析，如序列同源性搜索，也是复杂的。基因组数据库是演绎数据库技术的一个极具挑战性的应用领域，基因组信息由生物实验结果、分子生物学知识、参考文献等多种数据组成。数据之间的关系也是重要的基因组信息。关系数据库不支持管理如此复杂的数据。面向对象的数据库适合于管理复杂的数据，而演绎数据库技术是分析复杂数据的关键技术，因此我们开发了一个De…将演绎数据库技术与面向对象数据库技术相结合，使面向对象数据库更具诱导性。关于演绎面向对象数据库系统的理论方面，已有许多研究报道。然而，实践性的报道却很少。演绎数据库技术中引入了类原子和方法项两个新概念。这些基于面向对象技术的概念有助于演绎数据库和面向对象数据库的集成。我们实现了一个演绎面向对象数据库，并从实际有效性的角度对其进行了评估。基于面向对象技术，新创建了80多个基因组信息类。来自GenBank和GDB的人类基因组数据(约150MB)被存储到演绎的面向对象的数据库中。通过使用演绎面向对象数据库对基因组信息的分析，揭示了演绎面向对象数据库在数据结构和数据库查询方面的描述能力。本研究展示了演绎数据库技术应用于面向对象数据库技术的有效性。较少

This study aims to improve the facilities of existing database namagement systems by using the technologies of deductive database. First we applied the technologies to a CAD system and had some success. Thecn we made use of them for genomic computation.Genome databases are required to store and manage much larger and more complex data than those that CAD databases deal with. Moreover, analyzes on genome information, such as sequence homology search, are complicated. A genome databese is a challenging application field of deductive database technologies.Genome information consists of various kinds of data, such as results of biological experiments, knowledge on molecular biology, and references. Relationships between the data are also important genome information. Relational databases do not support to manage such complex data. Object-oriented databases are suitable for managing the complex data while deductive database technologies are essential to analyze them.Hence, we developed a de … More ductive object-oriented database that deductive database technologies are integrated into object-oriented database technologies. Many studies have been reported on the theoretical aspect of deductive object-oriented database systems. However, the practical reports are few. Two new concepts, a class atom and a method term, were introduced into deductive database technologies. These concepts based on the object-oriented technology facilitates the integration of a deductive database and an object-oriented database.We implemented a deductive object-oriented database and evaluated it from the view point of practical effectiveness. Based on the object-oriented technology, more than 80 classes were newly created for the genome information. Thehuman genome data (about 150 MB) derived from GenBank and GDB were stored into the deductive object-oriented database. Analyzes of the genome information by using the deductive object-oriented database revealed the descriptive power of a deductive object-oriented database concerning both data structures and database queries. This study shows the effectiveness of deductive database technologies applied to object-oriented database technologies. Less