Friday 29 January 2016

mca5043 smu mca Fall 2015 V sem assignment

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PROGRAM-MCA
SEMESTER-V
SUBJECT CODE & NAME-mca5043– Data Warehousing and Data Mining
CREDIT-4
BK ID-B1633
MAX. MARKS-60
Q1. Differentiate between OLTP and Data Warehouses.
Answer:
Differentiate Data Warehouse database and OLTP Databases:





2. Explain the Data Warehouse Kimball life cycle. 10
Answer.
Data Warehouse Kimball life cycle
The Kimball Lifecycle is a

3. Describe about Hyper Cube and Multicube 5+5
Answer.
Hyper Cube and Multicube
Multidimensional databases can present their data to an application using two types of cubes: hypercubes and multicubes.


4. List and explain the Strategies for data reduction. 5*2
Answer.
Strategies for data reduction
Data reduction: Obtain a reduced representation of the data set that is much smaller in volume but yet produces the same (or almost the

5. Describe K-means method for clustering. List its advantages and drawbacks. 5+5
Answer.
K-means method for clustering
k-means clustering is a method of vector quantization, originally from signal processing, that is popular for cluster analysis in data mining. k-means clustering aims to partition n observations into k clusters in which each observation belongs to the cluster with the nearest mean, serving as a prototype of the cluster. This results in a partitioning of the data space

6. Describe about Multilevel Databases and Web Query Systems 5+5
Answer.
Multilevel Databases and Web Query Systems
Multilevel Databases
A multilevel database system (MDBMS) supports the application of a multilevel policy for regulating access to the database objects. In this approach


Get fully solved assignment. Buy online from website
online store
or
plz drop a mail with your sub code
we will revert you within 2-3 hour or immediate
Charges rs 125/subject and rs 500/semester only.
if urgent then call us on 08791490301, 08273413412


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