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a. Define the term "deadlock". There are four conditions that must hold before deadlock is possible. Name them.
b. Outline an algorithm that detects whether there is a deadlock. The algorithm should be able to cope with multiple types of resources, each type having a limited number of units available.
c. When should the algorithm be invoked? The answer to this question may depend on system characteristics such as the rate of resource requests, the granularity of resources, and the expected rate of deadlock. List three possible choices and discuss the criteria you would use to choose among them.
Example -Find the employee name, salary, department number and average salary of his/her department, for those employees whose salary is more than the average salary of that depart
Type of views : Simple views and Difficult Views Feature Simple Views Complex Views Number of tables One
Databases and data warehouses both are databases and both contains number of rows and columns of tables containing data. Data warehouse is really different from databases because d
Do you have experts of the dbms
For this application, we will consider IBM DB2 catalog data (i.e., metadata) for IBM's enterprise-class servers running the z/OS (formerly OS/390 or MVS) operating system. One of
What is assertion? Mention the forms available. An assertion is a predicate expressing a condition that we wish the database always to satisfy. Domain integrity constraints.
What is called remapping of bad sectors? If the controller detects that a sector is injured when the disk is initially formatted, or when an attempt is made to write the secto
Importance Of File Organisation In Database To execute a database efficiently, there are various design tradeoffs needed. One of the most vital ones is the file Organisation. F
Question: i) Explain the terms data warehousing and data mining. ii) Discuss the importance of the following security principles that a digital firm should amongst others, n
Prove that a relation which is 4NF must be BCNF. Ans Let R be in 4NF. Suppose it is not in BCNF. Hence, there exists an FD X→Y in R such that x is not a super key. Although
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