CS614-Midterm
1 / 50
B-Tree is used as an index to provide access to records
2 / 50
Multi-dimensional databases (MDDs) typically use ___________ formats to store pre-summarized cube structures.
3 / 50
All data is ______________ of something real. I An Abstraction II A Representation Which of the following option is true?
4 / 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 ___________
5 / 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.
6 / 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.
7 / 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...
8 / 50
_______ is an application of information and data.
9 / 50
30.Data Warehouse is about taking / colleting data from different ________ sources:
10 / 50
The users of data warehouse are knowledge workers in other words they are _______in the organization.
11 / 50
Data Warehouse provides the best support for analysis while OLAP carries out the _________ task.
12 / 50
Naturally Evolving architecture occurred when an organization had a _______ approach to handling the whole process of hardware and software architecture.
13 / 50
The purpose of the House of Quality technique is to reduce ______ types of risk.
14 / 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?
15 / 50
The goal of ______is to look at as few block as possible to find the matching records.
16 / 50
The automated, prospective analyses offered by data mining move beyond the analyses of past events provided by _____________ tools typical of decision support systems.
17 / 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?
18 / 50
The performance in a MOLAP cube comes from the O(1) look-up time for the array data structure.
19 / 50
For a given data set, to get a global view in un-supervised learning we use
20 / 50
: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is
21 / 50
The growth of master files and magnetic tapes exploded around the mid- _______. :
22 / 50
Ad-hoc access means to run such queries which are known already.
23 / 50
The automated, prospective analyses offered by data mining move beyond the analysis of past events provided by respective tools typical of ___________.
24 / 50
DOLAP allows download of “cube” structures to a desktop platform with the need for shared relational or cube server.
25 / 50
Relational databases allow you to navigate the data in ____________ that is appropriate using the primary, foreign key structure within the data model.
26 / 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.
27 / 50
Focusing on data warehouse delivery only often end up _________.
28 / 50
People that design and build the data warehouse must be capable of working across the organization at all levels
29 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
30 / 50
It is observed that every year the amount of data recorded in an organization :
31 / 50
Data Transformation Services (DTS) provide a set of _____ that lets you extract, transform, and consolidate data from disparate sources into single or multiple destinations supported by DTS connectivity.
32 / 50
Pakistan is one of the five major ________ countries in the world.
33 / 50
Change Data Capture is one of the challenging technical issues in _____________
34 / 50
To judge effectiveness we perform data profiling twice.
35 / 50
36 / 50
It is observed that every year the amount of data recorded in anorganization is
37 / 50
________ gives total view of an organization
38 / 50
The need to synchronize data upon update is called
39 / 50
De-Normalization normally speeds up
40 / 50
The divide & conquer cube partitioning approach helps alleviate the ____________ limitations of MOLAP implementation.
41 / 50
The goal of ideal parallel execution is to completely parallelize those parts of a computation that are not constrained by data dependencies. The __________ the portion of the program that must be executed sequentially, the greater the scalability of computation.
42 / 50
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
A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.
45 / 50
Pre-computed _______ can solve performance problems
46 / 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.
47 / 50
_________ breaks a table into multiple tables based upon common column values.
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
50 / 50
Taken jointly, the extract programs or naturally evolving systems formed a spider web, also known as
Your score is
The average score is 0%
Restart quiz
