CS614 Midterm Online Quiz

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.

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

________ is the technique in which existing heterogeneous segments are reshuffled, relocated into homogeneous segments.

Relational databases allow you to navigate the data in ____________ that is appropriate using the primary, foreign key structure within the data model.

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?

 ________ gives total view of an organization

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?

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

NUMA stands for __________

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

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:

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

30.Data Warehouse is about taking / colleting data from different ________ sources:

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

Virtual cube is used to query two similar cubes by creating a third “virtual” cube by a join between two cubes.

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

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

Change Data Capture is one of the challenging technical issues in _____________

In a traditional MIS system, there is an almost linear sequence of queries.

For a smooth DWH implementation we must be a technologist.

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 ____________.

Slice and Dice is changing the view of the data.

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

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

The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.

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.

The goal of star schema design is to simplify ________

DOLAP allows download of “cube” structures to a desktop platform with the need for shared relational or cube server.

Pre-join technique is used to avoid

Horizontal splitting breaks a table into multiple tables based upon_______

People that design and build the data warehouse must be capable of working across the organization at all levels

De-Normalization normally speeds up

People that design and build the data warehouse must be capable of working across the organization at all levels

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.

If w is the window size and n is the size of data set, then the complexity of merging phase in BSN method is___________

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.

The users of data warehouse are knowledge workers in other words they are _______in the organization.

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.

Naturally Evolving architecture occurred when an organization had a _______ approach to handling the whole process of hardware and software architecture.

We must try to find the one access tool that will handle all the needs of their users.

Multi-dimensional databases (MDDs) typically use ___________ formats to store pre-summarized cube structures.

DSS queries do not involve a primary key

B-Tree is used as an index to provide access to records

Normalization effects performance

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

In _________ system, the contents change with time. :

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

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 ___________

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?