数据库是电子信息时代的重要标志,数据库系统则是这个时代人们管理信息的主要工具。近20多年来,数据库系统在各行各业甚至许多家庭都得到了广泛应用。有关这方面的知识普及和培训工作也得到了普遍重视,各种教科书和普及性读物充斥了书架,使读者眼花瞭乱,难以选择。其中,内容比较系统全面,与实际应用结合紧密,普及与提高二者的关系处理得较好的 Database is an important symbol of the era of electronic information, database systems are the main tools people manage information in this era. In the past 20 years, the database system has been widely used in all walks of life and even many families. The popularization and training of knowledge in this area have also been given universal attention. Bookshelf and popular books are flooded with shelves, making it difficult for readers to choose and disarray. Among them, the content is more systematic and comprehensive, and the actual application of close, popularization and improve the relationship between the two handled well