CS614-Midterm
1 / 50
Naturally Evolving architecture occurred when an organization had a _______ approach to handling the whole process of hardware and software architecture.
2 / 50
Non uniform distribution, when the data is distributed across the processors, is called ______.
3 / 50
________ gives total view of an organization
4 / 50
DTS allows us to connect through any data source or destination that is supported by ____________
5 / 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.
6 / 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:
7 / 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 _______.
8 / 50
A single database, couldn‟t serve both operational high performance transaction processing and DSS, analytical processing, all at the same time.
9 / 50
Many data warehouse project teams waste enormous amounts of time searching in vain for a _______.
10 / 50
Analytical processing uses ____________ , instead of record level access.
11 / 50
_________ breaks a table into multiple tables based upon common column values.
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13 / 50
30.Data Warehouse is about taking / colleting data from different ________ sources:
14 / 50
Pakistan is one of the five major ________ countries in the world.
15 / 50
Normalization effects performance
16 / 50
17 / 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.
18 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
19 / 50
The STAR schema used for data design is a __________ consisting of fact and dimension tables. :
20 / 50
If w is the window size and n is the size of data set, then the complexity of merging phase in BSN method is___________
21 / 50
Pre-computed _______ can solve performance problems
22 / 50
_______________, if too big and does not fit into memory, will be expensive when used to find a record by given key.
23 / 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 ___________
24 / 50
It is observed that every year the amount of data recorded in anorganization is
25 / 50
For a DWH project, the key requirement are ________ and product experience.
26 / 50
____________ in agriculture extension is that pest population beyond which the benefit of spraying outweighs its cost.
27 / 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.
28 / 50
Focusing on data warehouse delivery only often end up _________.
29 / 50
The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.
30 / 50
De-Normalization normally speeds up
31 / 50
32 / 50
The goal of star schema design is to simplify ________
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
In horizontal splitting, we split a relation into multiple tables on the basis of
35 / 50
To measure or quantify the similarity or dissimilarity, different techniques are available. Which of the following option represent the name of available techniques?
36 / 50
If every key in the data file is represented in the index file then index is :
37 / 50
38 / 50
To identify the __________________ required we need to perform data profiling
39 / 50
For a relation to be in 4NF it must be:-
40 / 50
The automated, prospective analyses offered by data mining move beyond the analyses of past events provided by _____________ tools typical of decision support systems.
41 / 50
The key idea behind ___________ is to take a big task and break it into subtasks that can be processed concurrently on a stream of data inputs in multiple, overlapping stages of execution.
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43 / 50
The performance in a MOLAP cube comes from the O(1) look-up time for the array data structure.
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45 / 50
_______________, if fits into memory, costs only one disk I/O access to locate a record by given key.
46 / 50
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 ____________.
47 / 50
A data warehouse implementation without an OLAP tool is always possible.
48 / 50
All data is ______________ of something real. I An Abstraction II A Representation Which of the following option is true?
49 / 50
Taken jointly, the extract programs or naturally evolving systems formed a spider web, also known as
50 / 50
Investing years in architecture and forgetting the primary purpose of solving business problems, results in inefficient application. This is the example of _________ mistake.
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