Can you list the main criteria that should be met when implementing transactions in a database?

The main criteria for implementing transactions in a database are the properties of ACID:

• Atomicity: All operations in a transaction are completed fully or not at all.
• Consistency: A transaction transitions the database from one valid state to another.
• Isolation: Concurrent transactions do not affect each other, and the results of each are visible only after completion.
• Durability: After a transaction is committed, changes are saved even in case of failures.

In Java, APIs like JDBC or frameworks such as Spring Transaction Management are often used to work with transactions, providing these properties.

Example using JDBC:

Connection conn = dataSource.getConnection();
try {
    conn.setAutoCommit(false);
    // Execute SQL operations
    conn.commit();
} catch (SQLException e) {
    conn.rollback();
} finally {
    conn.close();
}