how to test transaction rollbacks

Data | database What is a database transaction A database transaction is a series of actions performed as a single logical unit of work. The payment process includes at least the following database operations, assuming a single transaction for

MySQL transaction processing simply describes the transaction:MySQL transaction is mainly used to deal with large-scale and high-complexity data.For example, in the Personnel Management system, you delete a person, you need to delete the basic

A transaction is a continuous set of database operations, as if it were a single unit of work. In other words, it will never be a complete transaction unless each individual operation within that group is successful. If any operation in the

First create a data table in the test library TestDB: Use [TestDB]GO/** * * object: Table [dbo]. [Person] * * * * **/SETAnsi_nulls onGOSETQuoted_identifier onGOCREATE TABLE [dbo].[ Person]( [PersonId] [nchar]( -) not NULL, [PersonName] [nchar](

Data | Database attached A: Introduction to the transaction A transaction is a series of actions executed as a single logical unit, which means that the actions are either all successful or fail altogether. If the last action fails, the previous

Data | database Another error that goes to extremesConfident novices may revel in some of the knowledge they have mastered, and the would-be developers who have just contacted database transaction processing are also complacent about applying the

Triggers can do a lot of things, but it also brings a lot of problems. The right use is to use it at the right time and not to use it when it is inappropriate.Some common uses for triggers are as follows:[1] Elastic referential integrity: implements

Triggers can do a lot of things, but it also brings a lot of problems. The trick to using it is to use it at the right time, rather than using it at an inappropriate time.Some common uses for triggers are as follows: Elastic referential

Triggers can do a lot of things, but it also brings a lot of problems. The trick to using it is to use it at the right time, rather than using it at an inappropriate time.Some common uses for triggers are as follows: Elastic referential

From:http://www.cnblogs.com/kissdodog/p/3173421.htmlTriggers can do a lot of things, but it also brings a lot of problems. The trick to using it is to use it at the right time, rather than using it at an inappropriate time.Some common uses for