图数据库orientDB（1-2）例子

http://gog.orientdb.com/index.html#/infotab

小朱25岁，出生在教师家庭并且有个姐姐小田，他现在奋斗在帝都。 

那么SQL是这样滴！！！

CREATE VERTEX V SET name="小朱",sex="男",age="25";

CREATE VERTEX V SET name="小田",sex="女",age="27";

CREATE EDGE E FROM #9:0 TO #10:0 SET name="sisiter";

CREATE EDGE E FROM #10:0 TO #9:0 SET name="brother";

Select  from V where name in ['小朱',"小田"];

* select 在 Graph 页面查询会自动渲染出关系结果

小朱还有一个可爱的女盆友叫小刘

CREATE VERTEX V SET name="小刘",sex="女",age="23";

CREATE EDGE E FROM #9:0 TO #11:0 SET name="lover";

CREATE EDGE E FROM #11:0 TO #9:0 SET name="lover";

小朱目前工作在企业ABC，他有一堆同事小马、小龚、小微…..

CREATE VERTEX V SET name="ABC";

CREATE VERTEX V SET name="小马",sex="男",age="29",company="ABC";

CREATE VERTEX V SET name="小龚",sex="男",age="28",company="ABC";

CREATE VERTEX V SET name="小微",sex="女",age="24",company="ABC";

UPDATE V SET company = 'ABC' WHERE name='小朱'

CREATE EDGE E FROM (select from V where company='ABC') TO (select from V where name ='ABC') SET name="employee";

小朱目前跟不同同事合作完成了如下项目：PROJECT-1,PROJECT-2,PROJECT-3…..

CREATE VERTEX V SET name="PROJECT-1",type='JAVA',starttime='2016/01/01';

CREATE VERTEX V SET name="PROJECT-2",type='JAVA',starttime='2016/01/01';

CREATE VERTEX V SET name="PROJECT-3",type='JAVA',starttime='2016/01/01';

CREATE EDGE E FROM (select from V where name in ['小朱','小马','小微']) TO (select from v where name='PROJECT-1') SET name="work";

CREATE EDGE E FROM (select from V where name in ['小朱','小马','小微','小龚']) TO (select from v where name='PROJECT-2') SET name="work";

CREATE EDGE E FROM (select from V where name in ['小朱','小马','小龚']) TO (select from v where name='PROJECT-3') SET name="work";

以上描述中，所有点和边缘均继承祖先V、E对象，不能方便的通过语句进行筛选，不推荐直接创建V、E记录。

改造以上实例，用不同的关系对象表示

上图出现了两种对象（公司，人,项目）……划分规则，看心情 

有5类关系（情侣，姐,弟，雇员，合作） 

莫名其妙有了V{Company,Preson,Project}，E{Lover,sisiter,brother,employee,work}

CREATE CLASS Company
EXTENDS V;

CREATE CLASS Project
EXTENDS V;

CREATE CLASS Preson
EXTENDS V;

CREATE CLASS Lover
EXTENDS E;

CREATE CLASS Sisiter
EXTENDS E;

CREATE CLASS Brother
EXTENDS E;

CREATE CLASS Employee
EXTENDS E;

CREATE CLASS Work EXTENDS E;

CREATE VERTEX Preson SET name="小朱",sex="男",age="25",company="Lianjia";

CREATE VERTEX Preson SET name="小刘",sex="女",age="23";

CREATE VERTEX Preson SET name="小田",sex="女",age="27";

CREATE VERTEX Company SET name="Lianjia";

CREATE VERTEX Preson SET name="小马",sex="男",age="29",company="Lianjia";

CREATE VERTEX Preson SET name="小龚",sex="男",age="28",company="Lianjia";

CREATE VERTEX Preson SET name="小微",sex="女",age="24",company="Lianjia";

CREATE VERTEX Project SET name="PROJECT-1",type='JAVA',starttime='2016/01/01';

CREATE VERTEX Project SET name="PROJECT-2",type='JAVA',starttime='2016/01/01';

CREATE VERTEX Project SET name="PROJECT-3",type='JAVA',starttime='2016/01/01';

#把以前的顶点移动到每个具体的类别

#MOVE VERTEX(SELECT FROM V WHERE name='ABC') TO CLASS:Company;

#创建情侣关系

CREATE EDGE Lover FROM (select from Preson where name='小朱') TO (select from Preson where name='小刘');

CREATE EDGE Lover FROM (select from Preson where name='小刘') TO (select from Preson where name='小朱');

#创建姐弟关系

CREATE EDGE Sisiter FROM (select from Preson where name='小朱') TO (select from Preson where name='小田');

CREATE EDGE Brother FROM (select from Preson where name='小田') TO (select from Preson where name='小朱');

#创建雇佣关系

CREATE EDGE Employee FROM (select from Preson where company='Lianjia') TO (select from Company where name ='Lianjia');

#创建项目关系

CREATE EDGE Work FROM (select from Preson where name in ['小朱','小马','小微']) TO (select from Project where name='PROJECT-1');

CREATE EDGE Work FROM (select from Preson where name in ['小朱','小马','小微','小龚']) TO (select from Project where name='PROJECT-2');

CREATE EDGE Work FROM (select from Preson where name in ['小朱','小马','小龚']) TO (select from Project where name='PROJECT-3');