本文介绍了JDBC的基本概念及其实现方式，包括SUN提供的数据库操作规范、JDBC与数据库的关系、四个核心对象（DriverManager、Connection、Statement、ResultSet）的作用及使用流程。通过创建Java项目并连接MySQL数据库的实际案例，帮助读者快速掌握JDBC的基本用法。
I. overview of JDBC
1.JDBC:SUN provides a set of operating database specifications
The relationship between 2.JDBC and database: the relation between interface and implementation class
3.JDBC specification: (four core objects)
ADriverManager: for registration drivers
Connection: indicates a link to the database creation
Statement: the object that operates the database executing the SQL statement
Listing ResultSet: a result set or a virtual table
Two, JDBC entry procedures
1. create Java project, boot package
2. create a test database in MySQL and insert data
3. code implementation
4.results of enforcement
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