Derby数据库是一个纯用Java实现的内存数据库,属于Apache的一个开源项目。由于是用Java实现的,所以可以在任何平台上运行;另外一
Derby数据库是一个纯用Java实现的内存数据库,属于Apache的一个开源项目。由于是用Java实现的,所以可以在任何平台上运行;另外一个特点是体积小,免安装,只需要几个小jar包就可以运行了。下面说下其安装及配置
安装
1).从apache下载Derby数据库(如db-derby-10.10.1.1-bin.zip)并解压到任意目录(如:D:\Derby\db-derby-10.10.1.1-bin)。
2).配置环境变量DERBY_HOME=D:\Derby\db-derby-10.10.1.1-bin
并添加到path和classpath环境变量(%DERBY_HOME%\bin;%DERBY_HOME%\lib\derbyrun.jar)
3).测试数据库安装 C:\>sysinfo
------------------ Java Information ------------------
Java Version: 1.7.0_40
Java Vendor: Oracle Corporation
Java home: C:\Program Files\Java\jdk1.7.0_40\jre
Java classpath: D:\Derby\db-derby-10.10.1.1-bin\bin;D:\Derby\db-derby-10.10.1.1-bin\lib\derbyrun.jar;
OS name: Windows 7
OS architecture: amd64
OS version: 6.1
Java user name: qqqqq
Java user home: D:\userdata\qqq
Java user dir: C:\
java.specification.name: Java Platform API Specification
java.specification.version: 1.7
java.runtime.version: 1.7.0_40-b43
--------- Derby Information --------
[D:\Derby\db-derby-10.10.1.1-bin\lib\derby.jar] 10.10.1.1 - (1458268)
[D:\Derby\db-derby-10.10.1.1-bin\lib\derbytools.jar] 10.10.1.1 - (1458268)
[D:\Derby\db-derby-10.10.1.1-bin\lib\derbynet.jar] 10.10.1.1 - (1458268)
[D:\Derby\db-derby-10.10.1.1-bin\lib\derbyclient.jar] 10.10.1.1 - (1458268)
连接
C:\>ij
ij 版本 10.10
ij> CONNECT 'jdbc:derby:D:\Project\derbyDB\testdb;create=true';(如果数据库testdb不存在,则创建改数据库)
ij> CONNECT 'jdbc:derby:D:\Project\derbyDB\testdb;'; (连接testdb数据库)
ij(CONNECTION1)> CREATE TABLE FIRSTTABLE(ID INT PRIMARY KEY,NAME VARCHAR(12));(创建表)
已插入/更新/删除 0 行
ij(CONNECTION1)> INSERT INTO FIRSTTABLE VALUES(10,'TEN'),(20,'TWENTY'),(30,'THIRTY');(插入数据)
已插入/更新/删除 3 行
ij(CONNECTION1)> SELECT * FROM FIRSTTABLE;
ID |NAME
------------------------
10 |TEN
20 |TWENTY
30 |THIRTY
已选择 3 行
ij(CONNECTION1)>exit;(退出)
说明
1. sysinfo工具用于显示Java环境信息和Derby的版本信息。
2. ij工具来进行数据库交互,执行SQL脚本,如查询、增删改、创建表等
例子
下面是个完整的例子,,如何程序中操作JavaDB
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Properties;
public class TestDerby {
public static void main(String[] args) {
try {
Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
System.out.println("Load the embedded driver");
Connection conn = null;
Properties props = new Properties();
props.put("user", "user1"); props.put("password", "user1");
conn=DriverManager.getConnection("jdbc:derby:C:\\Project\\derbyDB\\testdb;");
System.out.println("create and connect to testdb");
Statement s = conn.createStatement();
ResultSet rs = s.executeQuery("SELECT * FROM FIRSTTABLE");
System.out.println("name\t\tscore");
while(rs.next()) {
StringBuilder builder = new StringBuilder(rs.getString(1));
builder.append("\t");
builder.append(rs.getInt(1));
System.out.println(builder.toString());
}
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}catch (Exception e) {
e.printStackTrace();
}
}
}
Hadoop集群、hive、Derby安装部署详细说明
体验纯Java数据库——Derby
[推荐]专家讲价优化Derby数据库技巧
配置Hive使用嵌入式Derby或客服模式Derby方法
使用Derby数据库首次连接时的ERROR 42Y07问题
Derby 的详细介绍:请点这里
Derby 的下载地址:请点这里
本文永久更新链接地址:

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