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Define Deadlock prevention
These protocols make sure that the system will never enter a deadlock state. There are two methods to deadlock prevention. One approach makes sure that no cyclic waits can take place by ordering the requests for locks, or requiring all locks to be obtained together. The other method is closer to deadlock recovery, and carries out transaction rollback in place of waiting for a lock, while the wait could potentially result in a deadlock. In this approach two timestamp based methods are there: wait - die and wound - wait. In wait -die, the older transaction is permitted to wait if it needs data from older transaction. In wound - wait, the younger transaction is rolled back if it requires data from older transaction if older transaction requires data currently held by a younger transaction, though younger transaction is allowed wait if it requires data from older transaction.
need a DBMS system on any data for assignment.
Create role named role_table that allows a user to create tables. Using role_table allow users kripa and reena to create tables. CREATE ROLE role_table; GRANT CREATE ANY TABLE
The database application project (DAP) for this assignment consists of the creation of a fully functional Microsoft Access database application for a real client. I recommend you s
what is binary relationship
Data Fragmentation "Fragmentation includes decomposing the data in relation to non-overlapping component relations". Why do we require fragmenting a relation?
QUESTION (a) Give two advantages of using Linked List as compared to arrays. (b) (i) You are working as programmer at the Orange Mauritius branch. You have been asked to cre
(a) Why did SAP introduce the extended star schema?
NEED ER DIAGRAM WITH MINIMUM ENTITY AND RELATIONSHIP of Hospital Management System
#question.explain diversity and magnitude of organic compounds and general properties?
Breaking into Subsystems Decomposition is a significant technique for coping with complexity based on idea of divide and conquers. In dividing a problem into sub problems, the
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