schema 数据库 sql 简单的建表和对数据库的增删查改-sql database schema to build a simple table and add to, delete from the database search to

很简单的小程序，包含购买电脑的增删查改，使用java语言开发，仅供参考。-Very simple program, including the purchase of computers additions and deletions investigation changed, using java language development for reference only.