Concepts required for database transactions

I. Basic classes required by database transactions (1 ). sqlConnection is used to connect to the database; (2 ). sqlCommand is the execution of SQL statement commands; (3 ). sqlTransaction is the start of a transaction. 2. transactions are classified as: show transactions, hide transactions, and automatically execute transactions. 3. Key words of database transactions are begin, commit, and rollback. 4:

I. Basic classes required by database transactions (1 ). sqlConnection is used to connect to the database; (2 ). sqlCommand is the execution of SQL statement commands; (3 ). sqlTransaction is the start of a transaction. 2. transactions are classified as: show transactions, hide transactions, and automatically execute transactions. 3. Key words of database transactions are begin, commit, and rollback. 4:

I. Basic classes required by database transactions

(1) SqlConnection is used to connect to the database;

(2) SqlCommand is an SQL statement command;

(3) SqlTransaction is the beginning of the transaction;

2. transactions are classified as: displaying transactions, Hong Kong servers, hiding transactions, and automatic transactions;

Iii. Key words of database transactions:

Begin, commit, rollback;

4. A transaction is a series of SQL statements or SQL operation commands. As a unit of work, the transaction is submitted to the operating system, either successfully executed, on the U.S. server, or fails to be executed;

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