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What is the main difference between read-only and update methods?
A read-only method does not affect the values of a variable in an object, whereas an update method may alter the values of the variables
Compare wait-die deadlock prevention scheme with wait-wound scheme Ans: Wait-Die Scheme a) Based upon a nonpreemptive technique. b) If Pi requests a resource present
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
These are interactive interfaces, graphical that hide the difficulty of the DBMS and query language behind an intuitive, simple to understand, and convenient interface. This permit
what is physical data structure
How does a query tree represent a relational algebra expression? Ans: This includes transforming an initial expression (tree) into an equivalent expression (tree) that is
Can we delete data element, which is being used by table fields. No we cant delete data element.
Concurrency issues Data integrity: Threads accessing same object need to be synchronized, such as: banking account. Deadlock: One or more threads in system are perman
Explain the challenges before an E-business management.
what is stracture of dabms
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
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