When should I use COMMIT in SQL? Use COMMIT when you are sure that all changes in the transaction are correct and should be saved. 15 Does COMMIT in SQL affect other users? Yes, once COMMIT is executed, the changes become visible to other users. 14 What is COMMIT in SQL? COMMIT in ...
With CURSOR_CLOSE_ON_COMMIT set OFF, ROLLBACK does not affect any open synchronous STATIC or INSENSITIVE cursors or asynchronous STATIC cursors that have been fully populated. Open cursors of any other type are closed but not deallocated. An error that terminates a batch and generates an internal...
网络释义 1. 事务 ...7-9 删除数据(Delete)7-10 数据库的事务(Commit and Rollback)第8章 E.R模型转换成关系表……第9章 用户与权限的管理… www.amazon.cn|基于5个网页 2. 数据库的事务 《Oracle... ... 7-9 删除数据( Delete) 7-10数据库的事务(Commit and Rollback) 2-2 数据模型( Data...
BeginTrans、CommitTrans 和 RollbackTrans 範例 (VB) AddNew 方法(ADO) MoveFirst、MoveLast、MoveNext、MovePrevious 方法(ADO) Type 屬性範例 (屬性) (VC++) 優化Property-Dynamic (ADO) Size 属性 (ADO Stream) MarshalOptions 属性範例 (VC++)
particularly useful when an error occurs during a transaction, allowing you to reverse any changes made after the last `COMMIT`. Transactions are sequences of operations performed as a single logical unit of work, and `COMMIT` is used to make all changes permanent, whereas `ROLLBACK` undoes ...
With CURSOR_CLOSE_ON_COMMIT set OFF, ROLLBACK doesn't affect any open synchronous STATIC or INSENSITIVE cursors or asynchronous STATIC cursors that were fully populated. Open cursors of any other type are closed but not deallocated. An error that terminates a batch and generates an internal roll...
Commit the configuration. commit Manually create a rollback point. startup checkpoint checkpoint-name If a rollback point is not required, run the undo startup checkpoint checkpoint-name command to delete it. Check the rollback point information and confirm the rollback point to which a softwar...
支持事务提交commit、事务回滚rollback、崩溃恢复 行级别锁 支持一致性的非锁定读,提高了用户并发性和效率 用户数据存储在聚簇索引 根据主键查找IO比较少 支持外键,通过完整性约束,保证用户数据完整性, MyISAM的官方描述 These tables have a small footprint. Table-level locking limits the performance in read/wri...
If the ON ROLLBACK DELETE ROWS option was specified for the table, insert, update, and delete activity is not logged. During a ROLLBACK or ROLLBACK TO SAVEPOINT operation, if the table was updated since the last COMMIT statement, all rows are deleted from the table. Any open cursors for...
Commit the configuration. commit Manually create a rollback point. startup checkpoint checkpoint-name If a rollback point is not required, run the undo startup checkpoint checkpoint-name command to delete it. Check the rollback point information and confirm the rollback point ...