CS614-Midterm
1 / 50
in agriculture extension is that pest population beyond which the benefit of spraying outweighs levels
2 / 50
For a DWH project, the key requirement are ________ and product experience.
3 / 50
Cube is a __________ entity containing values of a certain fact at a certain aggregation level at an intersection of a combination of dimensions.
4 / 50
5 million bales.
5 / 50
Taken jointly, the extract programs or naturally evolving systems formed a spider web, also known as
6 / 50
To measure or quantify the similarity or dissimilarity, different techniques are available. Which of the following option represent the name of available techniques?
7 / 50
Data warehousing and on-line analytical processing (OLAP) are _______ elements of decision support system.
8 / 50
It is observed that every year the amount of data recorded in anorganization is
9 / 50
_______________, if too big and does not fit into memory, will be expensive when used to find a record by given key.
10 / 50
Relational databases allow you to navigate the data in ____________ that is appropriate using the primary, foreign key structure within the data model.
11 / 50
Which statement is true for De-Normalization?
12 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
13 / 50
To judge effectiveness we perform data profiling twice.
14 / 50
The need to synchronize data upon update is called
15 / 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.
16 / 50
Pipeline parallelism focuses on increasing throughput of task execution, NOT on __________ sub-task execution time.
17 / 50
In DWH project, it is assured that ___________ environment is similar to the production environment
18 / 50
As apposed to the out come of classification, estimation deal with ____________ valued outcome.
19 / 50
Analytical processing uses ____________ , instead of record level access.
20 / 50
: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is
21 / 50
_____ contributes to an under-utilization of valuable and expensive historical data, and inevitably results in a limitedcapability to provide decision support and analysis.
22 / 50
________ is the technique in which existing heterogeneous segments are reshuffled, relocated into homogeneous segments.
23 / 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.
24 / 50
For a smooth DWH implementation we must be a technologist.
25 / 50
In a traditional MIS system, there is an almost linear sequence of queries.
26 / 50
De-Normalization normally speeds up
27 / 50
Focusing on data warehouse delivery only often end up _________.
28 / 50
The input to the data warehouse can come from OLTP or transactional system but not from other third party database.
29 / 50
Grain is the ________ level of data stored in the warehouse.
30 / 50
Pre-join technique is used to avoid
31 / 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.
32 / 50
33 / 50
DSS queries do not involve a primary key
34 / 50
35 / 50
_____modeling technique is more appropriate for data warehouses.
36 / 50
37 / 50
NUMA stands for __________
38 / 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.
39 / 50
A data warehouse implementation without an OLAP tool is always possible.
40 / 50
_______ is an application of information and data.
41 / 50
Many data warehouse project teams waste enormous amounts of time searching in vain for a _______.
42 / 50
The automated, prospective analyses offered by data mining move beyond the analysis of past events provided by respective tools typical of ___________.
43 / 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.
44 / 50
45 / 50
The goal of ______is to look at as few block as possible to find the matching records.
46 / 50
.______ is class of Decision Support Environment.
47 / 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 ___________
48 / 50
Collapsing tables can be done on the ___________ relationships
49 / 50
Pakistan is one of the five major ________ countries in the world.
50 / 50
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