SQL preguntas y respuestas de entrevista
Pregunta 56. Posting
Posting is an event that writes Inserts, Updates & Deletes in the forms to the database but not committing these transactions to the database.
Pregunta 57. Rollback
Rollback causes work in the current transaction to be undone.
Pregunta 58. Savepoint
Savepoint is a point within a particular transaction to which you may rollback without rolling back the entire transaction.
Pregunta 59. Set Transaction
Set Transaction is to establish properties for the current transaction.
Pregunta 60. Locking
Locking are mechanisms intended to prevent destructive interaction between users accessing data. Locks are used to achieve.
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