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All Questions was from Past Papers…..
37 Mcqs was from Past paper + Quizzes
Subjective Totally from Past Papers
The goal of ___________ is to look at as few blocks as possible to find the matching records(s).
Indexing (Right Answer)
None of above
The automated, prospective analyses offered by data mining move beyond the analysis of past events provided by respective tools typical of ___________.
Decision Support systems
None of these
Pre-computed _______ can solve performance problems
Data mining uses _________ algorithms to discover patterns and regularities in data.
None of these
To identify the __________________ required we need to perform data profiling Degree of Transformation (Right Answer)
Execution can be completed successfully or it may be stopped due to some error. If some error occurs, execution will be terminated abnormally and all transactions will be ___________ Committed to the database (Right Answer)
All data is ______________ of something real. I An Abstraction II A Representation Which of the following option is true?
I Only (Right Answer)
Both I & II
None of I & II
For a DWH project, the key requirement are ________ and product experience.
Industry (Right Answer)
None of these
_________________ contributes to an under-utilization of valuable and expensive historical data, and inevitably results in a limited capability to provide decision support and analysis.
The lack of data integration and standardization (Right Answer)
Missing Data Data Stored in Heterogeneous Sources
DTS allows us to connect through any data source or destination that is supported by ____________ OLE DB (Right Answer)
If some error occurs, execution will be terminated abnormally and all transactions will be rolled back. In this case when we will access the database we will find it in the state that was before the ____________. Execution of package (Right Answer)
Creation of package
Connection of package
To judge effectiveness we perform data profiling twice.
One before Extraction and the other after Extraction
One before Transformation and the other after Transformation (Right Answer)
One before Loading and the other after Loading
Pre-computed _______ can solve performance problems
Aggregates (Right Answer)
De-Normalization normally speeds up ► Data Retrieval (Page 51)
► Data Modification
► Development Cycle
► Data Replication
For a given data set, to get a global view in un-supervised learning we use ► One-way Clustering (Page 271)
► Pearson correlation
► Euclidean distance
It is called a _____________ violation, if we have null values for attributes where NOT NULL constraint exists
UAT stands for
The application development quality assurance activities cannot be completed until the data is _____________
Product selection phase fall in Kimball
Which is not an issue of “Click stream data”.
HTTP true statement
The ith bit is set to 1, if ith row of the base table has the value for the indexed column. The statement refer to
In context of web data ware house. Which is NOT one of way to identify session
The application development quality assurance activities cannot be completed until the data is
Others Mcqs from Midterm + 3, 4 was from Handouts but very easy ….
2 Marks Questions
There are four categories of data quality improvement. Write any two. (2 marks)
The four categories of Data Quality Improvement
• Policy & Procedure
• Data Design
Write two unsupervised learning? 2 marks
One way clustering
Two way clustering
Statement meaning “be a Diplomat not technologist “ 2 marks
Answer: The biggest problem you will face during a warehouse implementation will be people, not the technology or the development.
1. Management: You’re going to have senior management complaining about completion dates and unclear objectives.
2. Development Team: You’re going to have development people protesting that everything takes too long and why can’t they do it the old way?
3. Users: You’re going to have users with outrageously unrealistic expectations, who are used to systems that require mouse-clicking but not much intellectual investment on their part.
4. And you’re going to grow exhausted, separating out Needs from Wants at all levels. Commit from the outset to work very hard at communicating the realities, encouraging investment, and cultivating the development of new skills in your team and your users (and even your bosses).
Most of all, keep smiling. When all is said and done, you’ll have a resource in place that will do magic, and your grief will be long past. Eventually, your smile will be effortless and real.
Define click stream? 2marks
Clickstream is every page event recorded by each of the company's Web servers
Although most exciting, at the same time it can be the most difficult and most frustrating.
Not JUST another data source.
3 Marks Questions
As the number of processes increase, the speedup should also increase. Thus theoretically there should be a linear speedup; however this is not the case in real. List at least 2 barrier of linear speedup. 3 marks
Common Dimensions in context with Web data warehouse. 3marks
Name of three DWH development methodologies? 3 marks
One question was to identify statement is correct or not (was from Midterm) 3 marks
5 Marks Question:
Before sitting down with the business community to gather information, it is suggested to set you up for a productive session. Write three activities requirement preplanning phase 5 marks
Requirements preplanning: This phase consists of activities like choosing the forum, identifying and preparing the requirements team and finally selecting, scheduling and preparing the business representatives.
This query was given SELECT*FROM R WHERE A= 5 and we have to tell which
Technique is appropriate from dense, sparse, B-tree and has indexing. 5 marks
Answer: Hash Indexing is appropriate for the given query, because hash indexing is good for matching queries.
According to Amdahl’s Law prove that the speedup does not remain same if the fraction of the problem and number of processors are doubled. Please note that 0 overhead and “perfect” parallelism is used. Use following examples 5 marks
a) Fraction of the problem that must be computed sequentially is 5% and number of processors is 100.
b) Fraction of the problem that must be computed sequentially is 10% and number of processors is 200.
Ans: REF (Handouts Page # 204,205)
Amdahl’s law: S ≤ 1 / f + ( 1 – f ) / N
a) 1 / 0.05 + ( 1 – 0.05 ) / 100 = 16.81
b) 1 / 0.10 + ( 1 – 0.10 ) / 100 = 9.57
Hence it is evident that the speedup does not remain same if we double the fraction and number of processors.
Attributes of Page Dimension: 5 marks
Answer: Page no : 362 Ch# 40
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please baki members b cs614 ka paper share krn ..God bless u all...
CS614 FinalTerm MCQs With Refrence Solved By Zain Nasar(Arslan Arshad)
Wasfa Baig (MIT 3rd)
all objective was from past papers...subjective was from last chapters
and some questions were from old subjectives papers e.g
Identify the given statement as correct or incorrect and justify your answer in either
“The problem of Referential Integrity always occurs in traditional OLTP system as
well as in DWH”. 3m
My today CS614 paper
45% paper from past papers
2 question asked correct or not..and explain reason? ek question m ye 2 statements thi(Orr's law statement )and (Inteligent learning organization share thier information.)
mostly question and MCQs of K-means algorithm.
Software architecture name btany thy 2 marks
In K-means algorithm O(tkn) what is t,k and n?
context dimention for web data ware house 2 marks ka tha
Data mining vs statistics btana tha
Requirements Definition ka short question tha
My current cs614 paper 2016
Q.What may be possible implications if the developing organization never freezes the requirements throughout the DWH development i.e. it always behaves like an accommodating person. 5
Write down any two drawbacks if “Date” is stored in text format rather than using proper date format like “dd-MMM-yy” etc. 5
There are different data mining techniques e.g. “clustering”, “description” etc. Each of the following statement corresponds to some data mining technique. For each statement name the technique the statement corresponds to. 5
a) Assigning customers to predefined customer segments (i.e. good vs. bad)
b) Assigning credit applicants to predefined classes (i.e. low, medium, or high risk)
c) Guessing how much customers will spend during next 6 months
d) Building a model and assigning a value from 0 to 1 to each member of the set. Then classifying the members into categories based on a threshold value.
e) Guessing how much students will score more than 65% grades in midterm.
There are two justifications for a task to be performed in parallel, either it manipulates significant amount of data (i.e. size) or it can be solved by divide and conquer (D&C) strategy. From the given list, provide the justification for each of the task to perform it in parallel. 5
a) Large table scans and joins
b) Creation of large indexes
c) Partitioned index scans
d) Bulk inserts, updates, and deletes
e) Aggregations and copying
What are the tasks performed through import / export data wizard to load data?Write any three 3
In context of Four Cell Quadrant Technique, which business process (from the diagram below) will have highest priority? Justify with reason. [Marks 3]
Consider the following two statements. Specify that each statement correspond to which activity of data quality analysis project. 3
a) Identify functional user data quality requirements and establish data quality metrics.
b) Measure conformance to current business rules and develop exception reports.
Identify the given statement as correct or incorrect and justify your answer in either case.
“Bayesian Modeling is an example of Unsupervised Learning”. 3
The problems associated with the extracted data can correspond to non-primary keys. List down any four problems associated with the non-primary key.5
What is Reverse Proxy?2
Why analytics track is called as the “fun part" while designing a data warehouse?2
List two main types of unsupervised learning.2