1.oracle安装成功后, cmd sqlplus,然后system/orcl as sysdba 2.更改scott的密码,scott的默认密码是tiger SQL> alter user scott account unlock; 用户已更改. SQL> commit; SQL> conn scott/tiger ERROR: ORA-28001: the password has expired 更改 scott 的口令 新口令:youotech 重新键入新口令:youotech…
1. Creating a Database with DBCA DatabaseConfiguration Assistant (DBCA) is the preferred way to create a database,because it is a more automated approach, and your database is ready to use whenDBCA completes. DBCA can be launched by the Oracle Univ…
文章演示使用EF自动创建数据库第一个步骤创建实体类. 一.创建表映射实体类 using System; using System.Collections.Generic; using System.ComponentModel.DataAnnotations; using System.ComponentModel.DataAnnotations.Schema; using System.Data.Common; using System.Data.Entity; using System.Li…
**********创建数据库链接******************create public database link link_gzzl connect to system identified by "123456" using '(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.20)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAM…
创建好表实体类后,接着就是创建数据库上下文(继承DbContext)并将实体类添加进来. 代码示例如下: using DBClientEntity; using System; using System.Collections.Generic; using System.Data.Entity; using System.Data.Entity.Core.Objects; using System.Data.Entity.Infrastructure; using System.Data.Ent…
刚开始进去后,我是懵逼的状态,不知道要干嘛,之前常用的是MSSQL,感觉两者还是有区别的: oracle中:1.查询数据库名:select name,dbid from v$database;或者show parameter db_name;2.查询实例名:select instance_name from v$instance;或者show parameter instance_name;3.查询数据库域名:select value from v$parameter where name='d…
--创建表空间 create tablespace waterboss datafile 'd:\waterboss.dbf' size 100m autoextend on next 10m; --创建用户 create user wateruser identified default tablespace waterboss; --用户赋权 grant dba to wateruser;…