Description: Nested transactions are a concept in databases that refers to the ability to initiate a new transaction within the context of an already existing transaction. This allows database operations to be organized hierarchically, where a main transaction can contain multiple secondary transactions. The main advantage of nested transactions is that they provide greater control over error management and data recovery. If a secondary transaction fails, it is possible to roll back only that part without affecting the main transaction, which improves data integrity and efficiency in executing complex operations. Additionally, nested transactions allow for better code organization, making it easier to read and maintain. However, their implementation can vary depending on the database management system (DBMS) used, as not all DBMS support nested transactions in the same way. In general, this approach is especially useful in applications requiring a high degree of reliability where database operations are crucial to system functioning.
