CS614-Midterm
1 / 50
_______________, if fits into memory, costs only one disk I/O access to locate a record by given key.
2 / 50
The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.
3 / 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.
4 / 50
Investing years in architecture and forgetting the primary purpose of solving business problems, results in inefficient application. This is the example of _________ mistake.
5 / 50
_____________, if fits into memory , costs only one disk I/O access to locate a record by given key.
6 / 50
People that design and build the data warehouse must be capable of working across the organization at all levels
7 / 50
Data mining is a/an __________ approach, where browsing through data using data mining techniques may reveal something that might be of interest to the user as information that was unknown previously.
8 / 50
To judge effectiveness we perform data profiling twice.
9 / 50
_________ breaks a table into multiple tables based upon common column values.
10 / 50
_____ contributes to an under-utilization of valuable and expensive historical data, and inevitably results in a limitedcapability to provide decision support and analysis.
11 / 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.
12 / 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.
13 / 50
There are many variants of the traditional nested-loop join, if there is an index is exploited, then it is called……
14 / 50
In DWH project, it is assured that ___________ environment is similar to the production environment
15 / 50
If w is the window size and n is the size of data set, then the complexity of merging phase in BSN method is___________
16 / 50
Node of a B-Tree is stored in memory block and traversing a B-Tree involves ______ page faults.
17 / 50
De-Normalization normally speeds up
18 / 50
NUMA stands for __________
19 / 50
Horizontal splitting breaks a table into multiple tables based upon_______
20 / 50
During the application specification activity, we also must give consideration to the organization of the applications.
21 / 50
There are many variants of the traditional nested-loop join. If the index is built as part of the query plan and subsequently dropped, it is called
22 / 50
To measure or quantify the similarity or dissimilarity, different techniques are available. Which of the following option represent the name of available techniques?
23 / 50
24 / 50
A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.
25 / 50
.______ is class of Decision Support Environment.
26 / 50
The automated, prospective analyses offered by data mining move beyond the analyses of past events provided by _____________ tools typical of decision support systems.
27 / 50
28 / 50
We must try to find the one access tool that will handle all the needs of their users.
29 / 50
For a relation to be in 4NF it must be:-
30 / 50
DOLAP allows download of “cube” structures to a desktop platform with the need for shared relational or cube server.
31 / 50
Pre-computed _______ can solve performance problems
32 / 50
: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is
33 / 50
5 million bales.
34 / 50
For a DWH project, the key requirement are ________ and product experience.
35 / 50
________ gives total view of an organization
36 / 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 ___________
37 / 50
38 / 50
Data warehousing and on-line analytical processing (OLAP) are _______ elements of decision support system.
39 / 50
As apposed to the out come of classification, estimation deal with ____________ valued outcome.
40 / 50
In _________ system, the contents change with time. :
41 / 50
The goal of star schema design is to simplify ________
42 / 50
Change Data Capture is one of the challenging technical issues in _____________
43 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
44 / 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.
45 / 50
Many data warehouse project teams waste enormous amounts of time searching in vain for a _______.
46 / 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...
47 / 50
48 / 50
Analytical processing uses ____________ , instead of record level access.
49 / 50
The Kimball s iterative data warehouse development approach drew on decades of experience to develop the _________.
50 / 50
Collapsing tables can be done on the ___________ relationships
Your score is
The average score is 0%
Restart quiz
