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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.
Explain the steps for reduction of E-R model into relational model. Ans:(a) Entity set in E-R model will be considered as table name in relational Model. (b) Attributes of e
For each m:n relationship type R, we make a new table (say S) to represent R. We also contain the primary key attributes of both the participating entity types as a foreign key att
what should be included in this???
State about the Use Case Diagram A use case diagram represents a set of use cases, actors and their relationships. These diagrams shall be used to model context or requirement
Define According to the levels of abstraction, the schema at the intermediate level is called Ans: As per to the levels of abstraction, the schema at the intermediate level is
The technique of converting the state diagram to code a) Identify all major control paths. Start from initial state; choose a path across the diagram that corresponds to normal
QUESTION (a)(i) Define the term database. (ii) How is it different from a database management system? (b) What is the difference between an entity and an attribute? (c
Foreign Keys and NULL Let us take the relation: DEPT DEPT ID DNAME BUDGET D1 M
Explanation on Data Sharing?
Why were functional methods fashionable in early days? These are inspired directly by computer architecture and thus popular among computer scientist in early days. The divisio
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