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web technology Online Quiz - 182

Description: web technology Online Quiz - 182
Number of Questions: 20
Created by:
Tags: web technology
Attempted 0/20 Correct 0 Score 0

Balanced scorecard is an example of standard report

  1. True

  2. False


Correct Option: B

Data in BI architecture flows as follows

  1. Dispersed data -> Collected Data -> Integrated Data -> Information -> Knowledge

  2. Collected Data -> Dispersed data -> Integrated Data -> Information -> Knowledge

  3. Dispersed data -> Collected Data -> Integrated Data -> Knowledge-> Information

  4. Collected Data -> Dispersed data -> Integrated Data -> Knowledge -> Informatio


Correct Option: A

Data Integration involves -----------------------------

  1. Sourcing data from disparate sources and integrating to be central repository

  2. A process to change data from a detailed level to a summary level

  3. A process to change data from a summary level to a detailed level

  4. Separating data from one source into various sources of data


Correct Option: A

Data warehouse is which of the following?

  1. Can be updated by end users.

  2. Contains numerous naming conventions and formats.

  3. Organized around important subject areas.

  4. Contains only current data.


Correct Option: C

An operational system is which of the following?

  1. A system that is used to run the business in real time and is based on historical data.

  2. A system that is used to run the business in real time and is based on current data.

  3. A system that is used to support decision making and is based on current data.

  4. A system that is used to support decision making and is based on historical data


Correct Option: C
  1. data enrichment

  2. data caving

  3. data refinement

  4. data profiling


Correct Option: D
Explanation:

To solve this question, the user needs to have knowledge about data management and its various practices. The user must be able to identify the practice that best describes the characteristics of data content, quality, and structure.

Now, let's go through each option and explain why it is right or wrong:

A. Data enrichment: This practice involves enhancing data with additional information from external sources. It is not related to characterizing the content, quality, and structure of your data. Therefore, this option is incorrect.

B. Data caving: This practice refers to the process of creating and exploring data caves, which are virtual spaces where data can be analyzed and visualized. It is not related to characterizing the content, quality, and structure of your data. Therefore, this option is incorrect.

C. Data refinement: This practice involves improving the quality of data by removing errors, inconsistencies, and redundancies. Although it is related to data quality, it does not address the characterization of data content and structure. Therefore, this option is incorrect.

D. Data profiling: This practice involves analyzing data to understand its content, quality, and structure. It helps to identify potential issues with the data and to establish rules for data integration, transformation, and cleansing. Therefore, this option is the correct answer.

The Answer is: D

What is the process of removing erroneous, incomplete or old data from a database?

  1. data eradication

  2. data cleansing

  3. data unloading

  4. data purging


Correct Option: B

________________ provides context to data, acts as the semantic layer between a company’s IT systems and its business users

  1. Metadata

  2. Master data

  3. Data Governance

  4. Data Quality


Correct Option: A
  1. Source layer

  2. Report Layer

  3. Data Warehouse

  4. All of the above


Correct Option: D

Metadata for ‘123456TCS’ can be

  1. Format is Employee Number – Number (6), Organization Name – Char (3)

  2. Employee 123456 works for TCS for five years

  3. Employee 123456 has worked in BIPM services

  4. None of the above


Correct Option: A

An enterprise has multiple ETL and reporting tools. Which of the following Metadata management is recommended

  1. Distributed

  2. Federated

  3. Centralized

  4. Not possible to implement Metadata


Correct Option: A

_________________can be used by all level of users

  1. Enterprise report

  2. OLAP reports

  3. GIS

  4. Scorecards


Correct Option: A

Ad-hoc reporting requires predefined report template

  1. True

  2. False


Correct Option: B

The cube structure in OLAP achieves the __________functionality.

  1. Shared

  2. Information

  3. Collection

  4. Multidimensional


Correct Option: D

Aggregation provides OLAP with __________

  1. Multidimensional data.

  2. Pre-calculated data.

  3. Nested data.

  4. Slow data retrieval.


Correct Option: B

What term in OLAP defines changing the dimensional orientation of the report from the cube data?

  1. Dicing

  2. Slicing

  3. Rotating

  4. Nesting


Correct Option: C

Clustering, Scatter graph, Decision tree , histogram are some of GIS(Graphical Information system) visualizations

  1. True

  2. False


Correct Option: B
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