denotes the largest timestamp of any transaction that executed write(Q) successfully.

Related MCQs

• When transaction Ti requests a data item currently held by Tj, Ti is allowed to wait only if it has a timestamp smaller than that of Tj (that is, Ti is older than Tj). Otherwise, Ti is rolled back (dies). This is
• When transaction Ti requests a data item currently held by Tj, Ti is allowed to wait only if it has a timestamp larger than that of Tj (that is, Ti is younger than Tj ). Otherwise, Tj is rolled back (Tj is wounded by Ti). This is
• Transaction timestamp is:
• If several concurrent transactions are executed over the same data set and the second transaction updates the database before the first transaction is finished, the ____ property is violated and the database is no longer consistent.
• A lock that prevents the use of any tables in the database from one transaction while another transaction is being processed is called a
• Timestamp can be generated by:
• Which of the following trigger is executed once for each row in a transaction?
• The command                                  such tables are available only within the transaction executing the query and are dropped when the transaction finishes.
•          means that the data used during the execution of a transaction cannot be used by a second transaction until the first one is completed.
• If an transaction is performed in a database and committed, the changes are taken to the previous state of transaction by