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Company XYZ is an advertising company. It has its own website but the search facilities offered are not reliable. The company is willing to invest to acquire new machines and software. The company wants to have a new and powerful search engine like Google. You have been asked to develop and implement the search engine.
(a) Will a supercomputer be required to implement the search engine? What is the best hardware that will be used? Give reasons for the choice of hardware.
(b) What operating system or operating systems would you suggest and why?
(c) What database management system will you consider and why?
(d) How are you going to organise the database?
(e) Company XYZ wants a fault tolerant system. So in case of breakdown, the search engine could be available for use. What would you suggest as solution?
(f) Draw a well labelled diagram showing the architecture of the system. Give a list of other hardware components that will be required.
User error : This contains errors in the program (e.g., Logical errors) with errors made by online users of database. These types of errors can be avoided by applying some check
What is meant by Physical blocks? The input and output operations are completed in block units. The blocks residing on the disk are referred to as physical blocks.
One-to-many : An entity in A is related with any number of entities in B. An entity in B is related with at the most one entity in A. Example: Relationship between faculty and d
Consider the join of a relation R with relation S. If R has m tuples and S has n tuples, then the maximum size of join is: If R has m tuples and S has n tuples then maximum siz
Define tuple variable? Tuple variables are used for comparing two tuples in the same relation. The tuple variables are explained in the from clause by way of the as clause.
What are the four main characteristics of the database approach? The four major characteristics of the database approach are: 1. Self-describing nature of a database system. 2.
What is Relational Algebra? Relational algebra is a Procedural query Language?
explain in detail about crash recovery
Aggregate functions Some of these functions are min, count, max, and avg. These functions help in getting consolidated information from a set of tuples. Example:
average response time?
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