CS614-Midterm
1 / 50
Multi-dimensional databases (MDDs) typically use ___________ formats to store pre-summarized cube structures.
2 / 50
The purpose of the House of Quality technique is to reduce ______ types of risk.
3 / 50
Data warehousing and on-line analytical processing (OLAP) are _______ elements of decision support system.
4 / 50
Non uniform distribution, when the data is distributed across the processors, is called ______.
5 / 50
_____modeling technique is more appropriate for data warehouses.
6 / 50
Normalization effects performance
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
NUMA stands for __________
9 / 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.
10 / 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.
11 / 50
DSS queries do not involve a primary key
12 / 50
13 / 50
Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
14 / 50
Change Data Capture is one of the challenging technical issues in _____________
15 / 50
The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.
16 / 50
For a smooth DWH implementation we must be a technologist.
17 / 50
People that design and build the data warehouse must be capable of working across the organization at all levels
18 / 50
De-Normalization normally speeds up
19 / 50
_____________, if fits into memory , costs only one disk I/O access to locate a record by given key.
20 / 50
_________ breaks a table into multiple tables based upon common column values.
21 / 50
The users of data warehouse are knowledge workers in other words they are _______in the organization.
22 / 50
The Kimball s iterative data warehouse development approach drew on decades of experience to develop the _________.
23 / 50
Node of a B-Tree is stored in memory block and traversing a B-Tree involves ______ page faults.
24 / 50
Pre-computed _______ can solve performance problems
25 / 50
During the application specification activity, we also must give consideration to the organization of the applications.
26 / 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 ___________
27 / 50
Ad-hoc access means to run such queries which are known already.
28 / 50
Focusing on data warehouse delivery only often end up _________.
29 / 50
We must try to find the one access tool that will handle all the needs of their users.
30 / 50
________ gives total view of an organization
31 / 50
32 / 50
In DWH project, it is assured that ___________ environment is similar to the production environment
33 / 50
34 / 50
The need to synchronize data upon update is called
35 / 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.
36 / 50
During ETL process of an organization, suppose you have data which can be transformed using any of the transformation method. Which of the following strategy will be your choice for least complexity?
37 / 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.
38 / 50
To judge effectiveness we perform data profiling twice.
39 / 50
A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.
40 / 50
_______ is an application of information and data.
41 / 50
DOLAP allows download of “cube” structures to a desktop platform with the need for shared relational or cube server.
42 / 50
DTS allows us to connect through any data source or destination that is supported by ____________
43 / 50
As apposed to the out come of classification, estimation deal with ____________ valued outcome.
44 / 50
: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is
45 / 50
_____________ is a process which involves gathering of information about column through execution of certain queries with intention to identify erroneous records.
46 / 50
Grain is the ________ level of data stored in the warehouse.
47 / 50
It is observed that every year the amount of data recorded in anorganization is
48 / 50
Pakistan is one of the five major ________ countries in the world.
49 / 50
Horizontal splitting breaks a table into multiple tables based upon_______
50 / 50
The goal of star schema design is to simplify ________
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