CS614-Midterm
1 / 50
____________ in agriculture extension is that pest population beyond which the benefit of spraying outweighs its cost.
2 / 50
DTS allows us to connect through any data source or destination that is supported by ____________
3 / 50
It is observed that every year the amount of data recorded in an organization :
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_______________, if too big and does not fit into memory, will be expensive when used to find a record by given key.
5 / 50
To measure or quantify the similarity or dissimilarity, different techniques are available. Which of the following option represent the name of available techniques?
6 / 50
NUMA stands for __________
7 / 50
Suppose the amount of data recorded in an organization is doubled every year. This increase is __________ .
8 / 50
De-Normalization normally speeds up
9 / 50
_________ breaks a table into multiple tables based upon common column values.
10 / 50
Data mining uses _________ algorithms to discover patterns and regularities in data.
11 / 50
Data mining evolve as mechanism to cater the limitations of _____ systems to deal massive data sets with high dimensionality, new data types, multiple heterogeneous data resources etc...
12 / 50
: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is
13 / 50
Pakistan is one of the five major ________ countries in the world.
14 / 50
Pipeline parallelism focuses on increasing throughput of task execution, NOT on __________ sub-task execution time.
15 / 50
People that design and build the data warehouse must be capable of working across the organization at all levels
16 / 50
Transactional fact tables do not have records for events that do not occur. These are called
17 / 50
To identify the __________________ required we need to perform data profiling
18 / 50
19 / 50
Collapsing tables can be done on the ___________ relationships
20 / 50
Non uniform distribution, when the data is distributed across the processors, is called ______.
21 / 50
If every key in the data file is represented in the index file then index is :
22 / 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?
23 / 50
With data mining, the best way to accomplish this is by setting aside some of your data in a vault to isolate it from the mining process; once the mining is complete, the results can be tested against the isolated data to confirm the model's _______.
24 / 50
The goal of ideal parallel execution is to completely parallelize those parts of a computation that are not constrained by data dependencies. The smaller the portion of the program that must be executed __________, the greater the scalability of the computation.
25 / 50
_____modeling technique is more appropriate for data warehouses.
26 / 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.
27 / 50
In DWH project, it is assured that ___________ environment is similar to the production environment
28 / 50
The purpose of the House of Quality technique is to reduce ______ types of risk.
29 / 50
In horizontal splitting, we split a relation into multiple tables on the basis of
30 / 50
The goal of ______is to look at as few block as possible to find the matching records.
31 / 50
For a smooth DWH implementation we must be a technologist.
32 / 50
The automated, prospective analyses offered by data mining move beyond the analysis of past events provided by respective tools typical of ___________.
33 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
34 / 50
Analytical processing uses ____________ , instead of record level access.
35 / 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?
36 / 50
The need to synchronize data upon update is called
37 / 50
Many data warehouse project teams waste enormous amounts of time searching in vain for a _______.
38 / 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.
39 / 50
During the application specification activity, we also must give consideration to the organization of the applications.
40 / 50
Focusing on data warehouse delivery only often end up _________.
41 / 50
Slice and Dice is changing the view of the data.
42 / 50
A ________ dimension is a collection of random transactional codes, flags and/text attributes that are unrelated to any particular dimension. The ______ dimension is simply a structure that provides a convenient place to store the ______ attributes.
43 / 50
44 / 50
________ is the technique in which existing heterogeneous segments are reshuffled, relocated into homogeneous segments.
45 / 50
For good decision making, data should be integrated across the organization to cross the LoB (Line of Business). This is to give the total view of organization from:
46 / 50
A single database, couldn‟t serve both operational high performance transaction processing and DSS, analytical processing, all at the same time.
47 / 50
In a traditional MIS system, there is an almost linear sequence of queries.
48 / 50
49 / 50
For a given data set, to get a global view in un-supervised learning we use
50 / 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.
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