CS614-Midterm
1 / 50
For a DWH project, the key requirement are ________ and product experience.
2 / 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 ___________
3 / 50
We must try to find the one access tool that will handle all the needs of their users.
4 / 50
Pakistan is one of the five major ________ countries in the world.
5 / 50
To judge effectiveness we perform data profiling twice.
6 / 50
Pipeline parallelism focuses on increasing throughput of task execution, NOT on __________ sub-task execution time.
7 / 50
5 million bales.
8 / 50
The purpose of the House of Quality technique is to reduce ______ types of risk.
9 / 50
To identify the __________________ required we need to perform data profiling
10 / 50
11 / 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___________
12 / 50
There are many variants of the traditional nested-loop join, if there is an index is exploited, then it is called……
13 / 50
A data warehouse implementation without an OLAP tool is always possible.
14 / 50
The automated, prospective analyses offered by data mining move beyond the analyses of past events provided by _____________ tools typical of decision support systems.
15 / 50
_______ is an application of information and data.
16 / 50
17 / 50
Node of a B-Tree is stored in memory block and traversing a B-Tree involves ______ page faults.
18 / 50
The goal of star schema design is to simplify ________
19 / 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
20 / 50
Analytical processing uses ____________ , instead of record level access.
21 / 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...
22 / 50
De-Normalization normally speeds up
23 / 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.
24 / 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.
25 / 50
The automated, prospective analyses offered by data mining move beyond the analysis of past events provided by respective tools typical of ___________.
26 / 50
_________ breaks a table into multiple tables based upon common column values.
27 / 50
NUMA stands for __________
28 / 50
________ is the technique in which existing heterogeneous segments are reshuffled, relocated into homogeneous segments.
29 / 50
_______________, if too big and does not fit into memory, will be expensive when used to find a record by given key.
30 / 50
Virtual cube is used to query two similar cubes by creating a third “virtual” cube by a join between two cubes.
31 / 50
The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.
32 / 50
Suppose the amount of data recorded in an organization is doubled every year. This increase is __________ .
33 / 50
DTS allows us to connect through any data source or destination that is supported by ____________
34 / 50
For a relation to be in 4NF it must be:-
35 / 50
If „M‟ rows from table-A match the conditions in the query then table-B is accessed „M‟ times. Suppose table-B has an index on the join column. If „a‟ I/Os are required to read the data block for each scan and „b‟ I/Os for each data block then the total cost of accessing table-B is _____________ logical I/Os approximately.
36 / 50
The divide & conquer cube partitioning approach helps alleviate the ____________ limitations of MOLAP implementation.
37 / 50
Cube is a __________ entity containing values of a certain fact at a certain aggregation level at an intersection of a combination of dimensions.
38 / 50
in agriculture extension is that pest population beyond which the benefit of spraying outweighs levels
39 / 50
To measure or quantify the similarity or dissimilarity, different techniques are available. Which of the following option represent the name of available techniques?
40 / 50
41 / 50
Data Warehouse provides the best support for analysis while OLAP carries out the _________ task.
42 / 50
Ad-hoc access means to run such queries which are known already.
43 / 50
Relational databases allow you to navigate the data in ____________ that is appropriate using the primary, foreign key structure within the data model.
44 / 50
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46 / 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 ____________.
47 / 50
The goal of ______is to look at as few block as possible to find the matching records.
48 / 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:
49 / 50
____________ in agriculture extension is that pest population beyond which the benefit of spraying outweighs its cost.
50 / 50
In _________ system, the contents change with time. :
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