开发者社区> 问答> 正文

PL/SQL:What is a Trigger? Name some instances

已解决

PL/SQL:What is a Trigger? Name some instances when “Triggers” can be used.

展开
收起
1780169608831412 2021-10-16 18:04:13 519 0
1 条回答
写回答
取消 提交回答
  • 网络规划设计师、敏捷专家、CISP、ITSS服务经理、ACA全科目、ACP4项、ACE、CBP、CDSP、CZTP等。拥有 PRINCE2 Foundation/Practitioner、CCSK、ITIL、ISO27001、PMP等多项国际认证。 专利5+、期刊10+、知识产权师。核心期刊审稿人。
    采纳回答

    As the name indicates, ‘Trigger’ means to ‘activate’ something. In the case of PL/SQL, a trigger is a stored procedure that specifies what action has to be taken by the database when an event related to the database is performed.

    Syntax:

    TRIGGER trigger_name
     trigger_event
     [ restrictions ]
    BEGIN
     actions_of_trigger;
    END;
    
    2021-10-16 18:17:05
    赞同 2 展开评论 打赏
问答分类:
问答标签:
问答地址:
问答排行榜
最热
最新

相关电子书

更多
SQL Server 2017 立即下载
GeoMesa on Spark SQL 立即下载
原生SQL on Hadoop引擎- Apache HAWQ 2.x最新技术解密malili 立即下载