CS614-Midterm
1 / 50
Taken jointly, the extract programs or naturally evolving systems formed a spider web, also known as
2 / 50
Grain is the ________ level of data stored in the warehouse.
3 / 50
Horizontal splitting breaks a table into multiple tables based upon_______
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The automated, prospective analyses offered by data mining move beyond the analyses of past events provided by _____________ tools typical of decision support systems.
5 / 50
For a smooth DWH implementation we must be a technologist.
6 / 50
The input to the data warehouse can come from OLTP or transactional system but not from other third party database.
7 / 50
To identify the __________________ required we need to perform data profiling
8 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
9 / 50
Analytical processing uses ____________ , instead of record level access.
10 / 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.
11 / 50
In DWH project, it is assured that ___________ environment is similar to the production environment
12 / 50
During the application specification activity, we also must give consideration to the organization of the applications.
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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.
14 / 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.
15 / 50
Investing years in architecture and forgetting the primary purpose of solving business problems, results in inefficient application. This is the example of _________ mistake.
16 / 50
A data warehouse implementation without an OLAP tool is always possible.
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Focusing on data warehouse delivery only often end up _________.
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in agriculture extension is that pest population beyond which the benefit of spraying outweighs levels
19 / 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?
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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 ___________
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____________ in agriculture extension is that pest population beyond which the benefit of spraying outweighs its cost.
22 / 50
NUMA stands for __________
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Rearranging the grouping of source data, delivering it to the destination database, and ensuring the quality of data are crucial to the process of loading the data warehouse. Data ____________ is vitally important to the overall health of a warehouse project. 1. Cleansing 2. Cleaning 3. Scrubbing Which of the following options is true?
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For a DWH project, the key requirement are ________ and product experience.
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_____________, if fits into memory , costs only one disk I/O access to locate a record by given key.
26 / 50
_______ is an application of information and data.
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28 / 50
Change Data Capture is one of the challenging technical issues in _____________
29 / 50
The automated, prospective analyses offered by data mining move beyond the analysis of past events provided by respective tools typical of ___________.
30 / 50
The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.
31 / 50
Non uniform distribution, when the data is distributed across the processors, is called ______.
32 / 50
Virtual cube is used to query two similar cubes by creating a third “virtual” cube by a join between two cubes.
33 / 50
Cube is a __________ entity containing values of a certain fact at a certain aggregation level at an intersection of a combination of dimensions.
34 / 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?
35 / 50
Pakistan is one of the five major ________ countries in the world.
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Data mining uses _________ algorithms to discover patterns and regularities in data.
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All data is ______________ of something real. I An Abstraction II A Representation Which of the following option is true?
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Pipeline parallelism focuses on increasing throughput of task execution, NOT on __________ sub-task execution time.
40 / 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:
41 / 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.
42 / 50
A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.
43 / 50
Suppose the amount of data recorded in an organization is doubled every year. This increase is __________ .
44 / 50
DOLAP allows download of “cube” structures to a desktop platform with the need for shared relational or cube server.
45 / 50
DTS allows us to connect through any data source or destination that is supported by ____________
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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.
48 / 50
The STAR schema used for data design is a __________ consisting of fact and dimension tables. :
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50 / 50
The goal of star schema design is to simplify ________
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