CS614-Midterm
1 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
2 / 50
NUMA stands for __________
3 / 50
For a smooth DWH implementation we must be a technologist.
4 / 50
The _________ is only a small part in realizing the true business value buried within the mountain of data collected and stored within organizations business systems and operational databases.
5 / 50
Investing years in architecture and forgetting the primary purpose of solving business problems, results in inefficient application. This is the example of _________ mistake.
6 / 50
As apposed to the out come of classification, estimation deal with ____________ valued outcome.
7 / 50
________ gives total view of an organization
8 / 50
During ETL process of an organization, suppose you have data which can be transformed using any of the transformation method. Which of the following strategy will be your choice for least complexity?
9 / 50
Pipeline parallelism focuses on increasing throughput of task execution, NOT on __________ sub-task execution time.
10 / 50
Suppose the amount of data recorded in an organization is doubled every year. This increase is __________ .
11 / 50
There are many variants of the traditional nested-loop join, if there is an index is exploited, then it is called……
12 / 50
Companies collect and record their own operational data, but at the same time they also use reference data obtained from _______ sources such as codes, prices etc.
13 / 50
Execution can be completed successfully or it may be stopped due to some error. In case of successful completion of execution all the transactions will be ___________
14 / 50
For a DWH project, the key requirement are ________ and product experience.
15 / 50
Data Warehouse provides the best support for analysis while OLAP carries out the _________ task.
16 / 50
The purpose of the House of Quality technique is to reduce ______ types of risk.
17 / 50
The goal of ideal parallel execution is to completely parallelize those parts of a computation that are not constrained by data dependencies. The __________ the portion of the program that must be executed sequentially, the greater the scalability of computation.
18 / 50
The technique that is used to perform these feats in data mining modeling, and this act of model building is something that people have been doing for long time, certainly before the _______ of computers or data mining technology.
19 / 50
A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.
20 / 50
21 / 50
____________ in agriculture extension is that pest population beyond which the benefit of spraying outweighs its cost.
22 / 50
in agriculture extension is that pest population beyond which the benefit of spraying outweighs levels
23 / 50
De-Normalization normally speeds up
24 / 50
Data mining evolve as a mechanism to cater the limitations of ________ systems to deal massive data sets with high dimensionality, new data types, multiple heterogeneous data resources etc.
25 / 50
When performing objective assessments, companies follow a set of principles to develop metrics specific to their needs, there is hard to have “one size fits all” approach. Which of the following statement represents the pervasive functional forms?
26 / 50
Non uniform distribution, when the data is distributed across the processors, is called ______.
27 / 50
Data mining is a/an ______ approach , where browsing through data using mining techniques may reveal something that might be of interest to the user as information that was unknown previously.
28 / 50
Grain is the ________ level of data stored in the warehouse.
29 / 50
30 / 50
Transactional fact tables do not have records for events that do not occur. These are called
31 / 50
Data Transformation Services (DTS) provide a set of _____ that lets you extract, transform, and consolidate data from disparate sources into single or multiple destinations supported by DTS connectivity.
32 / 50
33 / 50
All data is ______________ of something real. I An Abstraction II A Representation Which of the following option is true?
34 / 50
For a relation to be in 4NF it must be:-
35 / 50
In _________ system, the contents change with time. :
36 / 50
Which statement is true for De-Normalization?
37 / 50
DSS queries do not involve a primary key
38 / 50
The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.
39 / 50
The goal of star schema design is to simplify ________
40 / 50
: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is
41 / 50
It is observed that every year the amount of data recorded in an organization :
42 / 50
_________ breaks a table into multiple tables based upon common column values.
43 / 50
: The goal of ___________ is to look at as few blocks as possible to find the matching records(s).
44 / 50
The input to the data warehouse can come from OLTP or transactional system but not from other third party database.
45 / 50
Multi-dimensional databases (MDDs) typically use ___________ formats to store pre-summarized cube structures.
46 / 50
47 / 50
48 / 50
Ad-hoc access means to run such queries which are known already.
49 / 50
________ is the technique in which existing heterogeneous segments are reshuffled, relocated into homogeneous segments.
50 / 50
In a traditional MIS system, there is an almost linear sequence of queries.
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