SQL preguntas y respuestas de entrevista
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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.
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Pregunta 57. Rollback
Rollback causes work in the current transaction to be undone.
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Pregunta 58. Savepoint
Savepoint is a point within a particular transaction to which you may rollback without rolling back the entire transaction.
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Pregunta 59. Set Transaction
Set Transaction is to establish properties for the current transaction.
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Pregunta 60. Locking
Locking are mechanisms intended to prevent destructive interaction between users accessing data. Locks are used to achieve.
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