CS614-Midterm
1 / 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.
2 / 50
Data mining uses _________ algorithms to discover patterns and regularities in data.
3 / 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.
4 / 50
The growth of master files and magnetic tapes exploded around the mid- _______. :
5 / 50
Pipeline parallelism focuses on increasing throughput of task execution, NOT on __________ sub-task execution time.
6 / 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 ___________
7 / 50
For a DWH project, the key requirement are ________ and product experience.
8 / 50
In a traditional MIS system, there is an almost linear sequence of queries.
9 / 50
Focusing on data warehouse delivery only often end up _________.
10 / 50
Grain is the ________ level of data stored in the warehouse.
11 / 50
The input to the data warehouse can come from OLTP or transactional system but not from other third party database.
12 / 50
NUMA stands for __________
13 / 50
Data mining is a/an __________ approach, where browsing through data using data mining techniques may reveal something that might be of interest to the user as information that was unknown previously.
14 / 50
_____________, if fits into memory , costs only one disk I/O access to locate a record by given key.
15 / 50
The purpose of the House of Quality technique is to reduce ______ types of risk.
16 / 50
DSS queries do not involve a primary key
17 / 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:
18 / 50
For a smooth DWH implementation we must be a technologist.
19 / 50
Normalization effects performance
20 / 50
: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is
21 / 50
22 / 50
During the application specification activity, we also must give consideration to the organization of the applications.
23 / 50
Change Data Capture is one of the challenging technical issues in _____________
24 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
25 / 50
There are many variants of the traditional nested-loop join. If the index is built as part of the query plan and subsequently dropped, it is called
26 / 50
In horizontal splitting, we split a relation into multiple tables on the basis of
27 / 50
________ gives total view of an organization
28 / 50
29 / 50
_______________, if fits into memory, costs only one disk I/O access to locate a record by given key.
30 / 50
De-Normalization normally speeds up
31 / 50
If someone told you that he had a good model to predict customer usage, the first thing you might try would be to ask him to apply his model to your customer _______, where you already knew the answer.
32 / 50
DTS allows us to connect through any data source or destination that is supported by ____________
33 / 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?
34 / 50
_____ contributes to an under-utilization of valuable and expensive historical data, and inevitably results in a limitedcapability to provide decision support and analysis.
35 / 50
in agriculture extension is that pest population beyond which the benefit of spraying outweighs levels
36 / 50
We must try to find the one access tool that will handle all the needs of their users.
37 / 50
Pakistan is one of the five major ________ countries in the world.
38 / 50
All data is ______________ of something real. I An Abstraction II A Representation Which of the following option is true?
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40 / 50
In DWH project, it is assured that ___________ environment is similar to the production environment
41 / 50
To measure or quantify the similarity or dissimilarity, different techniques are available. Which of the following option represent the name of available techniques?
42 / 50
Horizontal splitting breaks a table into multiple tables based upon_______
43 / 50
Data mining derives its name from the similarities between searching for valuable business information in a large database, for example, finding linked products in gigabytes of store scanner data, and mining a mountain for a _________ of valuable ore.
44 / 50
45 / 50
Many data warehouse project teams waste enormous amounts of time searching in vain for a _______.
46 / 50
47 / 50
DOLAP allows download of “cube” structures to a desktop platform with the need for shared relational or cube server.
48 / 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.
49 / 50
_________ breaks a table into multiple tables based upon common column values.
50 / 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 _______.
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