What are transactions and their controls in SQL?
What are transactions and their controls....
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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。A transaction can be defined as the sequence task that is performed on databases in a logical manner to gain certain results. Operations like Creating, updating, deleting records performed in the database come from transactions.
In simple words, we can say that a transaction means a group of SQL queries executed on database records.
There are 4 transaction controls such as
COMMIT: It is used to save all changes made through the transaction. ROLLBACK: It is used to roll back the transaction. All changes made by the transaction are reverted back and the database remains as before. SET TRANSACTION: Set the name of the transaction. SAVEPOINT: It is used to set the point where the transaction is to be rolled back.2021-10-16 15:18:17赞同 1 展开评论 打赏
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