CS614-Midterm
1 / 50
.______ is class of Decision Support Environment.
2 / 50
In horizontal splitting, we split a relation into multiple tables on the basis of
3 / 50
The goal of star schema design is to simplify ________
4 / 50
Cube is a __________ entity containing values of a certain fact at a certain aggregation level at an intersection of a combination of dimensions.
5 / 50
The growth of master files and magnetic tapes exploded around the mid- _______. :
6 / 50
Focusing on data warehouse delivery only often end up _________.
7 / 50
_____________ is a process which involves gathering of information about column through execution of certain queries with intention to identify erroneous records.
8 / 50
in agriculture extension is that pest population beyond which the benefit of spraying outweighs levels
9 / 50
Naturally Evolving architecture occurred when an organization had a _______ approach to handling the whole process of hardware and software architecture.
10 / 50
Investing years in architecture and forgetting the primary purpose of solving business problems, results in inefficient application. This is the example of _________ mistake.
11 / 50
In a traditional MIS system, there is an almost linear sequence of queries.
12 / 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.
13 / 50
A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.
14 / 50
Pipeline parallelism focuses on increasing throughput of task execution, NOT on __________ sub-task execution time.
15 / 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.
16 / 50
_______________, if too big and does not fit into memory, will be expensive when used to find a record by given key.
17 / 50
: The goal of ___________ is to look at as few blocks as possible to find the matching records(s).
18 / 50
B-Tree is used as an index to provide access to records
19 / 50
: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is
20 / 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 ____________.
21 / 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.
22 / 50
Ad-hoc access means to run such queries which are known already.
23 / 50
24 / 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 ___________
25 / 50
All data is ______________ of something real. I An Abstraction II A Representation Which of the following option is true?
26 / 50
Collapsing tables can be done on the ___________ relationships
27 / 50
____________ in agriculture extension is that pest population beyond which the benefit of spraying outweighs its cost.
28 / 50
Slice and Dice is changing the view of the data.
29 / 50
The divide & conquer cube partitioning approach helps alleviate the ____________ limitations of MOLAP implementation.
30 / 50
Data mining uses _________ algorithms to discover patterns and regularities in data.
31 / 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?
32 / 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?
33 / 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.
34 / 50
The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.
35 / 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.
36 / 50
There are many variants of the traditional nested-loop join, if there is an index is exploited, then it is called……
37 / 50
The purpose of the House of Quality technique is to reduce ______ types of risk.
38 / 50
During the application specification activity, we also must give consideration to the organization of the applications.
39 / 50
In DWH project, it is assured that ___________ environment is similar to the production environment
40 / 50
41 / 50
Horizontal splitting breaks a table into multiple tables based upon_______
42 / 50
Pakistan is one of the five major ________ countries in the world.
43 / 50
To measure or quantify the similarity or dissimilarity, different techniques are available. Which of the following option represent the name of available techniques?
44 / 50
People that design and build the data warehouse must be capable of working across the organization at all levels
45 / 50
46 / 50
A data warehouse implementation without an OLAP tool is always possible.
47 / 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.
48 / 50
49 / 50
Data Warehouse provides the best support for analysis while OLAP carries out the _________ task.
50 / 50
Transactional fact tables do not have records for events that do not occur. These are called
Your score is
The average score is 0%
Restart quiz
