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A detailed example of PHP transaction processing

A, PHP transaction processing Overview: Transactions: A collection of several events Transactions: When all events are executed successfully, the transaction is executed, and if any one of the events fails to execute successfully, the other events

The performance comparison test of MyISAM and InnoDB of MySQL two kinds of table storage structure

mysql| Comparison | performance MySQL supports the two main table storage format Myisam,innodb, last month when doing a project, first used InnoDB, the result is particularly slow, 1 seconds can only insert 10. Later replaced by the MyISAM format, a

Some issues to note when JSP connects to Oracle databases

How to deal with the large types of CLOB and blobs CLOB can be used to store large text data, storing up to 4GB of data, and is more common in application development. Java provides a corresponding Sql.clob class. It provides two methods to read

Hibernate batch update and batch deletion

Modification of the batch: Scene: If there is a student table student, an existing attribute [college] renamed, from "Computer College" to "Computer Engineering" [does not consider the college table]. A DML (data manipulation language) operation

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