Transaction timestamp is:

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
•                          denotes the largest timestamp of any transaction that executed write(Q) successfully.
• Timestamp can be generated by:
• 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
• When the transaction finishes the final statement the transaction enters into
•                means that data used during the execution of a transaction cannot be used by a second transaction until the first one is completed.
• A system is in a              state if there exists a set of transactions such that every transaction in the set is waiting for another transaction in the set.