CS614 Midterm Online Quiz

It is observed that every year the amount of data recorded in an organization :

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.

The purpose of the House of Quality technique is to reduce ______ types of risk.

In horizontal splitting, we split a relation into multiple tables on the basis of

.______ is class of Decision Support Environment.

: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is

For a smooth DWH implementation we must be a technologist.

Data warehousing and on-line analytical processing (OLAP) are _______ elements of decision support system.

It is observed that every year the amount of data recorded in anorganization is

5 million bales.

For a DWH project, the key requirement are ________ and product experience.

Rearranging the grouping of source data, delivering it to the destination database, and ensuring the quality of data are crucial to the process of loading the data warehouse. Data ____________ is vitally important to the overall health of a warehouse project. 1. Cleansing 2. Cleaning 3. Scrubbing Which of the following options is true?

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.

Many data warehouse project teams waste enormous amounts of time searching in vain for a _______.

All data is ______________ of something real. I An Abstraction II A Representation Which of the following option is true?

The divide & conquer cube partitioning approach helps alleviate the ____________ limitations of MOLAP implementation.

_______ is an application of information and data.

There are many variants of the traditional nested-loop join, if there is an index is exploited, then it is called……

The STAR schema used for data design is a __________ consisting of fact and dimension tables. :

The purpose of the House of Quality technique is to reduce ______ types of risk.

To identify the __________________ required we need to perform data profiling

Which statement is true for De-Normalization?

In horizontal splitting, we split a relation into multiple tables on the basis of

Pakistan is one of the five major ________ countries in the world.

Pre-computed _______ can solve performance problems

Data Warehouse provides the best support for analysis while OLAP carries out the _________ task.

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?

NUMA stands for __________

in agriculture extension is that pest population beyond which the benefit of spraying outweighs levels

As apposed to the out come of classification, estimation deal with ____________ valued outcome.

Pre-computed _______ can solve performance problems

Investing years in architecture and forgetting the primary purpose of solving business problems, results in inefficient application. This is the example of _________ mistake.

_________ breaks a table into multiple tables based upon common column values.

Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.

Pakistan is one of the five major ________ countries in the world.

For a DWH project, the key requirement are ________ and product experience.

_____________ is a process which involves gathering of information about column through execution of certain queries with intention to identify erroneous records.

Collapsing tables can be done on the ___________ relationships

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

: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is

De-Normalization normally speeds up

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:

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.

Node of a B-Tree is stored in memory block and traversing a B-Tree involves ______ page faults.

Cube is a __________ entity containing values of a certain fact at a certain aggregation level at an intersection of a combination of dimensions.

Pipeline parallelism focuses on increasing throughput of task execution, NOT on __________ sub-task execution time.

DSS queries do not involve a primary key

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.

Pipeline parallelism focuses on increasing throughput of task execution, NOT on __________ sub-task execution time.

To measure or quantify the similarity or dissimilarity, different techniques are available. Which of the following option represent the name of available techniques?