CS614 Midterm Online Quiz

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

DTS allows us to connect through any data source or destination that is supported by ____________

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

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

.______ is class of Decision Support Environment.

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

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

Slice and Dice is changing the view of the data.

_____________, if fits into memory , costs only one disk I/O access to locate a record by given key.

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:

Focusing on data warehouse delivery only often end 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:

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

A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.

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.

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

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

Pre-computed _______ can solve performance problems

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.

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?

 ________ gives total view of an organization

For a smooth DWH implementation we must be a technologist.

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.

Non uniform distribution, when the data is distributed across the processors, is called ______.

To judge effectiveness we perform data profiling twice.

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

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

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

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.

De-Normalization normally speeds up

For a relation to be in 4NF it must be:-

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

The goal of star schema design is to simplify ________

Collapsing tables can be done on the ___________ relationships

The need to synchronize data upon update is called

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

_____ contributes to an under-utilization of valuable and expensive historical data, and inevitably results in a limitedcapability to provide decision support and analysis.

De-Normalization normally speeds up

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...

____________ in agriculture extension is that pest population beyond which the benefit of spraying outweighs its cost.

Analytical processing uses ____________ , instead of record level access.

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

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

Normalization effects performance

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

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

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

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.

NUMA stands for __________