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(a) Explain the three types of potential mistake which could occur if concurrency control is not properly enforced in the database system. Support your answer with appropriate example for each.
(b) Explain the data access protocol based on the compatibility matrix.
(c) Describe "deadlock" and give an example.
(d) Describe how a deadlock state can be detected and how the system can break such a state.
Designing the fields in the data base The following are the considerations one has to remain in mind while designing the fields in the data base. Coding, compression, en
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
Attributes and its types explain?
What is serialization? Where it is used and why? Serialization is a basic term used for mechanisms which enable objects and object structures to be converted into portable for
List the steps for converting state diagram to the code. a) Finding major control path b) Finding the conditional statements c) Finding the loops d) Finding error ro
normal forms
Define functional and multivalued dependencies. Ans: A functional dependency is a assets of the semantics of the attributes in a relation. The semantics point out how at
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
what factors might influence a company to outsource its IT infrascture.
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