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2 Nelson, Robert VP USA<br>
4 Young, Bruce Eng USA<br>
5 Lambert, Kim Eng USA<br>
8 Johnson, Leslie Mktg USA<br>
9 Forest, Phil Mngr USA<br>
11 Weston, K. J. SRep USA<br>
12 Lee, Terri Admin USA<br>
14 Hall, Stewart Finan USA<br>
15 Young, Katherine Mngr USA<br>
20 Papadopoulos, Chris Mngr USA<br>
24 Fisher, Pete Eng USA<br>
28 Bennet, Ann Admin England<br>
29 De Souza, Roger Eng USA<br>
34 Baldwin, Janet Sales USA<br>
36 Reeves, Roger Sales England<br>
37 Stansbury, Willie Eng England<br>
44 Phong, Leslie Eng USA<br>
45 Ramanathan, Ashok Eng USA<br>
46 Steadman, Walter CFO USA<br>
52 Nordstrom, Carol PRel USA<br>
<br>
<br>
<br>
如果想查看数据库中的所有表,输入以下命令:<br>
<br>
SQL> SHOW TABLES;<br>
<br>
<br>
<br>
将显示以下信息:<br>
<br>
COUNTRY CUSTOMER<br>
DEPARTMENT EMPLOYEE<br>
EMPLOYEE_PROJECT JOB<br>
PHONE_LIST PROJECT<br>
PROJ_DEPT_BUDGET SALARY_HISTORY <br>
SALES<br>
<br>
<br>
<br>
要从isql中退出,只需输入“quit;”即可。<br>
<br>
创建自己的数据库<br>
<br>
到目前为止,我们已经以SYSDBA的身份执行了一些命令,并且查看了一些数据库范例。接下来创建一个数据库,并创建一个有权查看和更改数据库的用户,然后在操作系统中进行数据库测试。<br>
<br>
创建数据库需要使用isql工具。Firebird使用离散的形式存储文件。作为一种惯例,文件扩展名一般是.gdb,用户也可以用任何扩展名来存储文件。先以SYSDBA的身份来创建一个数据库,然后以test为名将其存储在$INTERBASE_HOME目录之下。<br>
<br>
首先在“/opt/interbase”目录下创建一个名为“testdb”的目录(注意要为其分配适当的权限)。切换至该目录,并以不带参数的情况下启动isql。然后使用CREATE DATABASE命令创建一个数据库,代码如下:<br>
<br>
SQL> CREATE DATABASE 'firstdb.gdb' USER 'sysdba' PASSWORD 'masterkey';<br>
<br>
<br>
<br>
该命令将在当前目录下创建一个名为firstdb.gdb的文件。该数据库归SYSDBA所有。下面来创建一个基本的销售表并且输入数据,代码如下:<br>
<br>
SQL> CREATE TABLE sales_catalog (<br>
CON> item_id varchar(10) not null primary key,<br>
CON> item_name varchar(40) not null,<br>
CON> item_desc varchar(50)<br>
CON> );<br>
SQL> INSERT INTO sales_catalog VALUES('001','Aluminium Wok',<br>
'Chinese wok used for stir fry dishes');<br>
SQL> INSERT INTO sales_catalog VALUES('002', <br>
'Chopsticks extra-long', '60-cm chopsticks');<br>
SQL> INSERT INTO sales_catalog VALUES('003', <br>
'Claypot', 'Pot for stews');<br>
SQL> INSERT INTO sales_catalog VALUES('004', <br>
'Charcoal Stove', 'For claypot dishes');<br>
SQL> SELECT * FROM sales_catalog;<br>
ITEM_ID ITEM_NAME ITEM_DESC<br>
=============================================<br>
001 Aluminium Wok Chinese wok used for stir fry dishes<br>
002 Chopsticks extra-long 60-cm chopsticks<br>
003 Claypot Pot for stews<br>
004 Charcoal Stove For claypot dishes<br>
<br>
<br>
<br>
添加用户<br>
<br>
不要使用系统管理员账号SYSDBA创建所有的数据库。有些时候,比如在运行多个属于不同用户和组的数据库时,可能希望每个用户和组都有各自的数据库,并有权查看。另外一种情形需要创建一个代理用户,可以执行所有数据库操作,但其权限都低于SYSDBA。进行这一操作时,需要使用gsec工具。例如,创建一个用户名为TestAdmin、密码为testadmin的账户(注意,密码的位数只能是8位),并且赋予其查看、修改和删除数据库 firstdb.gdb的权限。使用以下命令来完成这些功能:<br>
<br>
$ gsec -user SYSDBA -password masterkey<br>
GSEC> add TestAdmin -pw testadmin -fname FirstDB -lname Administrator<br>
Warning - maximum 8 significant bytes of password used<br>
<br>
<br>
<br>
打开数据库,为数据库创建一个系统管理角色,并为其分配适当的权限,然后运行以下代码:<br>
<br>
$ isql firstdb.gdb -user SYSDBA -password masterkey<br>
Database: firstdb.gdb, User: SYSDBA<br>
SQL> GRANT SELECT, UPDATE, INSERT, DELETE ON sales_catalog TO administrator;<br>
SQL> GRANT administrator TO TestAdmin;<br>
SQL> quit;<br>
<br>
<br>
<br>
将TestAdmin加至其中。接下来测试数据库。<br>
<br>
测试数据库<br>
<br>
首先退出gsec和isql,以TestAdmin的身份登录至数据库firstdb.gdb,并运行以下SQL语句:<br>
<br>
SQL> DELETE FROM sales_catalog;<br>
SQL> INSERT INTO sales_catalog VALUES('001', 'Aluminum Wok', 'Chinese wok');<br>
SQL> INSERT INTO sales_catalog VALUES('002', 'Microwave Oven', '300W Microwave oven');<br>
SQL> INSERT INTO sales_catalog VALUES('003', 'Chopsticks extra-long', '60cm chopsticks');<br>
SQL> SELECT * FROM sales_catalog;<br>
ITEM_ID ITEM_NAME ITEM_DESC <br>
===========================================<br>
001 Aluminum Wok Chinese wok<br>
002 Microwave Oven 300W Microwave oven<br>
003 Chopsticks extra-long 60cm chopsticks<br>
<br>
<br>
<br>
如果没有出现问题,就说明配置已经完全成功。现在,这只Linux上的火鸟可以展翅飞翔了。<br>
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