摘要：产品概念，5%产品定义，20%产品开发，25%产品测试，25%客户验收，10%产品维护15%项目管理：需求分析：设计：开发：测试：实施支持需求分析 ： 20% 设计、开发与测试：　20％　工程维护：60% 阅读全文

摘要：Three Roles: Product Owner, Scrum master, TeamThe Product owner: Own and prioritizes the Product Backlogdefines and prioritizes features--owns the gathering of requirementsagrees to iteration ground rules--set length of calendar time for sprint (2,3,4 weeks typical)does not interfere with sprint(no 阅读全文

摘要：联合查询：1.等值连接:（内连接，自然连接）SQL> select d.deptno, d.dname, e.empno, e.ename, e.sal 2 from dept d, emp e 3 where d.deptno=e.deptno;13 rows selected.2.非等值连接:SQL> select e.ename, e.sal, s.grade 2 from emp e, salgrade s 3* where e.sal between s.losal and s.hisal3.自连接:SQL> select e.ename, m.ename 2 fr 阅读全文

摘要：[root@localhost ~]# su - oracle[oracle@localhost ~]$ sqlplus / as sysdba;SQL> show user;USER is "SYS"SQL> startup open;SQL> alter user scott identified by tiger account unlock;SQL> alter user hr identified by hr account unlock;SQL> conn scott/tiger;SQL> set linesize 140;( 阅读全文

摘要：ORACLE 10g下载地址oracle 下载还需要用户名我自己注册了个方便大家使用下载user:1603869780@qq.compass:qwe123QWE密码是这个 一般不会动了 大家也不用帮我找回密码了每次都改 也很麻烦的如果有需要可以帮我浏览下 右侧的需要的信息用迅雷下就不用密码了 下载也不会卡到最后 还可以续传Oracle Database 10g Release 2 (10.2.0.1.0) Enterprise/Standard Edition for Microsoft Windows (32-bit) http://download.oracle.com/otn/nt/or 阅读全文