The `DAO.transBegin` in PHP is a function or method that is used to begin a transaction in a Data Access Object (DAO).
A transaction is a logical unit of work that groups multiple database operations together, allowing them to be executed as a single, atomic operation. Beginning a transaction ensures that all subsequent database operations within that transaction are either all successful or all rolled back, preventing data inconsistencies or corruption.
By calling `DAO.transBegin`, developers can initiate the transaction process, marking the start of the transaction. This function typically sets a lock on the database, ensuring that other concurrent transactions cannot modify the same data until the current transaction is completed.
Once the transaction is initiated, developers can perform various database operations, such as reading, updating, or deleting data. All these operations are considered part of the transaction until it is explicitly committed or rolled back.
In summary, `DAO.transBegin` is a method in PHP that begins a transaction in a Data Access Object, enabling developers to execute a series of database operations as a single, atomic unit, ensuring data consistency and integrity.
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