CS614-Midterm
1 / 50
The growth of master files and magnetic tapes exploded around the mid- _______. :
2 / 50
In horizontal splitting, we split a relation into multiple tables on the basis of
3 / 50
Pakistan is one of the five major ________ countries in the world.
4 / 50
The users of data warehouse are knowledge workers in other words they are _______in the organization.
5 / 50
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?
6 / 50
Many data warehouse project teams waste enormous amounts of time searching in vain for a _______.
7 / 50
_______ is an application of information and data.
8 / 50
Relational databases allow you to navigate the data in ____________ that is appropriate using the primary, foreign key structure within the data model.
9 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
10 / 50
_______________, if fits into memory, costs only one disk I/O access to locate a record by given key.
11 / 50
Naturally Evolving architecture occurred when an organization had a _______ approach to handling the whole process of hardware and software architecture.
12 / 50
13 / 50
Investing years in architecture and forgetting the primary purpose of solving business problems, results in inefficient application. This is the example of _________ mistake.
14 / 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.
15 / 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 ___________
16 / 50
The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.
17 / 50
A data warehouse implementation without an OLAP tool is always possible.
18 / 50
If every key in the data file is represented in the index file then index is :
19 / 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...
20 / 50
In DWH project, it is assured that ___________ environment is similar to the production environment
21 / 50
Cube is a __________ entity containing values of a certain fact at a certain aggregation level at an intersection of a combination of dimensions.
22 / 50
The goal of ______is to look at as few block as possible to find the matching records.
23 / 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.
24 / 50
B-Tree is used as an index to provide access to records
25 / 50
The purpose of the House of Quality technique is to reduce ______ types of risk.
26 / 50
_____________, if fits into memory , costs only one disk I/O access to locate a record by given key.
27 / 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?
28 / 50
Non uniform distribution, when the data is distributed across the processors, is called ______.
29 / 50
Data mining uses _________ algorithms to discover patterns and regularities in data.
30 / 50
The Kimball s iterative data warehouse development approach drew on decades of experience to develop the _________.
31 / 50
The automated, prospective analyses offered by data mining move beyond the analysis of past events provided by respective tools typical of ___________.
32 / 50
There are many variants of the traditional nested-loop join, if there is an index is exploited, then it is called……
33 / 50
A single database, couldn‟t serve both operational high performance transaction processing and DSS, analytical processing, all at the same time.
34 / 50
Suppose the amount of data recorded in an organization is doubled every year. This increase is __________ .
35 / 50
Collapsing tables can be done on the ___________ relationships
36 / 50
Analytical processing uses ____________ , instead of record level access.
37 / 50
.______ is class of Decision Support Environment.
38 / 50
5 million bales.
39 / 50
It is observed that every year the amount of data recorded in anorganization is
40 / 50
in agriculture extension is that pest population beyond which the benefit of spraying outweighs levels
41 / 50
42 / 50
For a DWH project, the key requirement are ________ and product experience.
43 / 50
Data warehousing and on-line analytical processing (OLAP) are _______ elements of decision support system.
44 / 50
________ gives total view of an organization
45 / 50
Horizontal splitting breaks a table into multiple tables based upon_______
46 / 50
People that design and build the data warehouse must be capable of working across the organization at all levels
47 / 50
Normalization effects performance
48 / 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.
49 / 50
_______________, if too big and does not fit into memory, will be expensive when used to find a record by given key.
50 / 50
NUMA stands for __________
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