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Question:
(a) What are decision support systems, and what role do they play in the business environment?
(b) Data mining is a knowledge discovery process of automated extraction of hidden predictive information from large databases.
(i) Describe the four main steps involved in the data mining process.
(ii) There are various data mining techniques dealing with different types of problems. Give example of any three techniques that could be used in a supermarket.
(iii) To better exploit data mining what are the pre-requisites for a data warehouse?
(iv) Discuss the two critical factors which can affect success with the application of data mining technology.
(v) Data mining being relatively a new technology, what advantages would an Insurance company achieved for implementing such a technique? Illustrate your answer with some examples.
For the relations answer the following queries in SQL Street (name, location, city) House (number, street_name) Lives (name, house_number) (i) Obtain the names of persons who liv
Draw an ER diagram that represents the information described below. Show all entity sets, relationship sets, primary keys, and the mapping cardinality of the relationship sets.
The First Normal Form (1NF) Let us first describe 1NF: Definition: A relation (table) is in 1NF if 1. There are no duplicate tuples or rows in the relation. 2.
Need a sample of a clinic database relationships
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
Objectives Define the terms RECOVERY and INTEGRITY; Define Recovery Techniques; Explain Error and Error detection techniques, and Define types of Authorisation.
Horizontal Fragmentation- Horizontal fragmentation groups together the tuples in a relation that are collectively used by the main transactions. A horizontal fragment is produced b
Hi, Do you offer private tuition for DBMS?
When every condition appears with equality condition (=) only. c) Natural join (denoted by R*S) When two join attributes have the similar name in both relations. (Tha
Question: This form represents one of a number used for each sailing of a range of boats. A passenger may go on many sailings and will have the same passenger number for each.
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