Define the following recovery technique and give a real-world example of where the technique could be...
Define the following recovery technique and give a real-world example of where the technique could be used effectively.
- Forward recovery (using backup copy of database)
Homework Answers
Answer)
The transaction helps in modifying the data which gets stored in the database and always passes the ACID test where the transaction would have to make the data present in the database be consistent even after it gets modified in the database.
Example: When there is an online payment made would have an effect on both the parties and the amount should be withdrawn from one of the accounts and get deposited to the other one or should not happen at all. It is either a successful transaction or a failed. If failed the amount should get rolled back
When the data gets recovering in a database then it should redo the effects of the previous transaction which is called as rolling forward or forward recover.
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