CS614 Midterm Online Quiz

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.

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

A single database, couldn‟t serve both operational high performance transaction processing and DSS, analytical processing, all at the same time.

In _________ system, the contents change with time. :

For a smooth DWH implementation we must be a technologist.

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

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:

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

For a given data set, to get a global view in un-supervised learning we use

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?

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

5 million bales.

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

In DWH project, it is assured that ___________ environment is similar to the production environment

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

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

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

Analytical processing uses ____________ , instead of record level access.

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.

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

DSS queries do not involve a primary key

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

Horizontal splitting breaks a table into multiple tables based upon_______

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:

Collapsing tables can be done on the ___________ relationships

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

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.

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

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 ___________

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

If every key in the data file is represented in the index file then index is :

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

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

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

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.

_____modeling technique is more appropriate for data warehouses.

The Kimball s iterative data warehouse development approach drew on decades of experience to develop the _________.

Suppose the amount of data recorded in an organization is doubled every year. This increase is __________ .

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

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.

Taken jointly, the extract programs or naturally evolving systems formed a spider web, also known as

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

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. :

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

Normalization effects performance

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.

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

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?