CS614-Midterm
1 / 50
DOLAP allows download of “cube” structures to a desktop platform with the need for shared relational or cube server.
2 / 50
Non uniform distribution, when the data is distributed across the processors, is called ______.
3 / 50
In a traditional MIS system, there is an almost linear sequence of queries.
4 / 50
________ gives total view of an organization
5 / 50
The automated, prospective analyses offered by data mining move beyond the analyses of past events provided by _____________ tools typical of decision support systems.
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
The STAR schema used for data design is a __________ consisting of fact and dimension tables. :
8 / 50
Pakistan is one of the five major ________ countries in the world.
9 / 50
To identify the __________________ required we need to perform data profiling
10 / 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?
11 / 50
The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.
12 / 50
_________ breaks a table into multiple tables based upon common column values.
13 / 50
Relational databases allow you to navigate the data in ____________ that is appropriate using the primary, foreign key structure within the data model.
14 / 50
15 / 50
_____ contributes to an under-utilization of valuable and expensive historical data, and inevitably results in a limitedcapability to provide decision support and analysis.
16 / 50
To measure or quantify the similarity or dissimilarity, different techniques are available. Which of the following option represent the name of available techniques?
17 / 50
Collapsing tables can be done on the ___________ relationships
18 / 50
Naturally Evolving architecture occurred when an organization had a _______ approach to handling the whole process of hardware and software architecture.
19 / 50
.______ is class of Decision Support Environment.
20 / 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.
21 / 50
Multi-dimensional databases (MDDs) typically use ___________ formats to store pre-summarized cube structures.
22 / 50
People that design and build the data warehouse must be capable of working across the organization at all levels
23 / 50
Pre-join technique is used to avoid
24 / 50
Virtual cube is used to query two similar cubes by creating a third “virtual” cube by a join between two cubes.
25 / 50
De-Normalization normally speeds up
26 / 50
Horizontal splitting breaks a table into multiple tables based upon_______
27 / 50
: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is
28 / 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:
29 / 50
The purpose of the House of Quality technique is to reduce ______ types of risk.
30 / 50
31 / 50
NUMA stands for __________
32 / 50
A single database, couldn‟t serve both operational high performance transaction processing and DSS, analytical processing, all at the same time.
33 / 50
The divide & conquer cube partitioning approach helps alleviate the ____________ limitations of MOLAP implementation.
34 / 50
Slice and Dice is changing the view of the data.
35 / 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.
36 / 50
The need to synchronize data upon update is called
37 / 50
A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.
38 / 50
There are many variants of the traditional nested-loop join, if there is an index is exploited, then it is called……
39 / 50
As apposed to the out come of classification, estimation deal with ____________ valued outcome.
40 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
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42 / 50
_______ is an application of information and data.
43 / 50
A data warehouse implementation without an OLAP tool is always possible.
44 / 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.
45 / 50
The growth of master files and magnetic tapes exploded around the mid- _______. :
46 / 50
Node of a B-Tree is stored in memory block and traversing a B-Tree involves ______ page faults.
47 / 50
48 / 50
Ad-hoc access means to run such queries which are known already.
49 / 50
Data warehousing and on-line analytical processing (OLAP) are _______ elements of decision support system.
50 / 50
The users of data warehouse are knowledge workers in other words they are _______in the organization.
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