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The Locking Protocol: To manage concurrency related problems we use locking. A lock is mainly a variable that is associated with a data item in the database. A lock can be located
Define NULL value NULL value NULL means something is unknown. It does NOT mean null (the digit 0). Null is as well employed as attribute value for a particular entity in which
#explain five disadvantages of a dbms..
Explain the paths in the association network We can analyze use of paths in the association network as given below: Calculate each operation Find associations whic
explain five responsibilities of DBA?
comparison of oracle RDBMS with MySQL
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
Describe the four main ways of optimising disk block access. Ans: a. Disk b. Non-volatile writes buffers c. File organization (Clustering) d. Log-based file system
Determine the advantage of object-orientation Finally, object-orientation has advantage of continuity throughout analysis, persistent representation and design implementation.
What are the two methods for dealing deadlock problem? The two procedures for dealing deadlock problem is deadlock detection and deadlock recovery.
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