安装企业版的orcale是不是太费时费力了？若只是学习用途的话，不妨试试轻便版的XE版本，同样是官网下载的，但是这个安装起来比完整版简便多了。
首先，你得先安装好orcale 11g XE 版本；（这里暂时不细说，有需要后续会补充。）
然后，登陆系统管理员用户，
在命令行输入SQLPLUS，连接，然后使用管理员登陆；
sys\(此处为你设置的密码) as sysdba
其次，创建用户：
create user scott identified by tiger;
授权：
grant connect,resource,dba to scott;
添加数据脚本内容：
Rem Copyright (c) 1990 by Oracle Corporation
Rem NAME
REM UTLSAMPL.SQL
Rem FUNCTION
Rem NOTES
Rem MODIFIED
Rem gdudey 06/28/95 - Modified for desktop seed database
Rem glumpkin 10/21/92 - Renamed from SQLBLD.SQL
Rem blinden 07/27/92 - Added primary and foreign keys to EMP and DEPT
Rem rlim 04/29/91 - change char to varchar2
Rem mmoore 04/08/91 - use unlimited tablespace priv
Rem pritto 04/04/91 - change SYSDATE to 13-JUL-87
Rem Mendels 12/07/90 - bug 30123;add to_date calls so language independent
Rem
rem
rem $Header: utlsampl.sql 7020100.1 94/09/23 22:14:24 cli Generic<base>; $ sqlbld.sql
rem
SET TERMOUT OFF
SET ECHO OFF rem CONGDON Invoked in RDBMS at build time. 29-DEC-1988
rem OATES: Created: 16-Feb-83 GRANT CONNECT,RESOURCE,UNLIMITED TABLESPACE TO SCOTT IDENTIFIED BY TIGER;
ALTER USER SCOTT DEFAULT TABLESPACE USERS;
ALTER USER SCOTT TEMPORARY TABLESPACE TEMP;
CONNECT SCOTT/TIGER
DROP TABLE DEPT;
CREATE TABLE DEPT
(DEPTNO NUMBER(2) CONSTRAINT PK_DEPT PRIMARY KEY,
DNAME VARCHAR2(14) ,
LOC VARCHAR2(13) ) ;
DROP TABLE EMP;
CREATE TABLE EMP
(EMPNO NUMBER(4) CONSTRAINT PK_EMP PRIMARY KEY,
ENAME VARCHAR2(10),
JOB VARCHAR2(9),
MGR NUMBER(4),
HIREDATE DATE,
SAL NUMBER(7,2),
COMM NUMBER(7,2),
DEPTNO NUMBER(2) CONSTRAINT FK_DEPTNO REFERENCES DEPT);
INSERT INTO DEPT VALUES
(10,'ACCOUNTING','NEW YORK');
INSERT INTO DEPT VALUES (20,'RESEARCH','DALLAS');
INSERT INTO DEPT VALUES
(30,'SALES','CHICAGO');
INSERT INTO DEPT VALUES
(40,'OPERATIONS','BOSTON');
INSERT INTO EMP VALUES
(7369,'SMITH','CLERK',7902,to_date('17-12-1980','dd-mm-yyyy'),800,NULL,20);
INSERT INTO EMP VALUES
(7499,'ALLEN','SALESMAN',7698,to_date('20-2-1981','dd-mm-yyyy'),1600,300,30);
INSERT INTO EMP VALUES
(7521,'WARD','SALESMAN',7698,to_date('22-2-1981','dd-mm-yyyy'),1250,500,30);
INSERT INTO EMP VALUES
(7566,'JONES','MANAGER',7839,to_date('2-4-1981','dd-mm-yyyy'),2975,NULL,20);
INSERT INTO EMP VALUES
(7654,'MARTIN','SALESMAN',7698,to_date('28-9-1981','dd-mm-yyyy'),1250,1400,30);
INSERT INTO EMP VALUES
(7698,'BLAKE','MANAGER',7839,to_date('1-5-1981','dd-mm-yyyy'),2850,NULL,30);
INSERT INTO EMP VALUES
(7782,'CLARK','MANAGER',7839,to_date('9-6-1981','dd-mm-yyyy'),2450,NULL,10);
INSERT INTO EMP VALUES
(7788,'SCOTT','ANALYST',7566,to_date('13-JUL-87')-85,3000,NULL,20);
INSERT INTO EMP VALUES
(7839,'KING','PRESIDENT',NULL,to_date('17-11-1981','dd-mm-yyyy'),5000,NULL,10);
INSERT INTO EMP VALUES
(7844,'TURNER','SALESMAN',7698,to_date('8-9-1981','dd-mm-yyyy'),1500,0,30);
INSERT INTO EMP VALUES
(7876,'ADAMS','CLERK',7788,to_date('13-JUL-87')-51,1100,NULL,20);
INSERT INTO EMP VALUES
(7900,'JAMES','CLERK',7698,to_date('3-12-1981','dd-mm-yyyy'),950,NULL,30);
INSERT INTO EMP VALUES
(7902,'FORD','ANALYST',7566,to_date('3-12-1981','dd-mm-yyyy'),3000,NULL,20);
INSERT INTO EMP VALUES
(7934,'MILLER','CLERK',7782,to_date('23-1-1982','dd-mm-yyyy'),1300,NULL,10);
DROP TABLE BONUS;
CREATE TABLE BONUS
(
ENAME VARCHAR2(10) ,
JOB VARCHAR2(9) ,
SAL NUMBER,
COMM NUMBER
) ;
DROP TABLE SALGRADE;
CREATE TABLE SALGRADE
( GRADE NUMBER,
LOSAL NUMBER,
HISAL NUMBER );
INSERT INTO SALGRADE VALUES (1,700,1200);
INSERT INTO SALGRADE VALUES (2,1201,1400);
INSERT INTO SALGRADE VALUES (3,1401,2000);
INSERT INTO SALGRADE VALUES (4,2001,3000);
INSERT INTO SALGRADE VALUES (5,3001,9999);
COMMIT; SET TERMOUT ON
SET ECHO ON
到这，用户SCOTT就基本创建完成了，但是还没完，SCOTT刚创建好并没有解锁，还不能用于PL/SQL登录，所以还需要以下步骤：
alter user scott identified by tiger; 修改scott密码
alter user scott account unlock; 解锁用户
conn scott/tiger (以scott模式登录)
show user (看看当前用户是否是scott)
select * from emp;执行这步，就能看到我们想看到的那几张表了;
格式不太规整，没关系，我们赶紧登陆PL/SQL看看：赶紧SELECT * FROM EMP;
出现：
嗯，完成了。