Database Systems: Design Implementation & Management
11th Edition
ISBN: 9781305850378
Author: Coronel
Publisher: Cengage
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Chapter 13, Problem 5RQ
Program Plan Intro
Operational data:
- Data quality is one of the key features of enterprise data management.
- The data obtained from the
operational system is low quality data because of the following reasons:- Obtaining the data from outside the organization.
- Redundant storage of data and inconsistent metadata.
- Problems while entering data due to poor interfaces, manual mistypes of data.
- The poor quality of the data is not recognized by the organization itself is an issue.
Decision support data:
The decision support data is used to interact with the software systems which help the users in the compilation of problems that occur in documents, files, raw data, business information and many such. Decision Support Systems (DSS) analyzes and operates the decision support data.
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Chapter 13 Solutions
Database Systems: Design Implementation & Management
Ch. 13 - Prob. 1RQCh. 13 - Prob. 2RQCh. 13 - Prob. 3RQCh. 13 - Prob. 4RQCh. 13 - Prob. 5RQCh. 13 - What is a data warehouse, and what are its main...Ch. 13 - Prob. 7RQCh. 13 - Prob. 8RQCh. 13 - Prob. 9RQCh. 13 - Prob. 10RQ
Ch. 13 - Prob. 11RQCh. 13 - Prob. 12RQCh. 13 - Prob. 13RQCh. 13 - Prob. 14RQCh. 13 - Prob. 15RQCh. 13 - Prob. 16RQCh. 13 - Prob. 17RQCh. 13 - Prob. 18RQCh. 13 - Prob. 19RQCh. 13 - Prob. 21RQCh. 13 - Prob. 22RQCh. 13 - Prob. 23RQCh. 13 - Prob. 24RQCh. 13 - Prob. 25RQCh. 13 - What is the SQL command to list the total sales by...Ch. 13 - What is the SQL command to list the total sales by...Ch. 13 - What is the SQL command to list the total sales by...Ch. 13 - What is the SQL command to list the total sales by...Ch. 13 - What is the SQL command to list the number of...Ch. 13 - What is the SQL command to list the number of...Ch. 13 - What is the SQL command to list the number of...Ch. 13 - Using the answer to Problem 10 as your base, what...
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- To evaluate data quality, there are six elements to consider.arrow_forwardWhat are the three basic classifications of diverse data sources, and how would you characterize and categorize each? Are you able to explain the difficulties associated with dealing with data that has a high valence?arrow_forwardIn the data hierarchy, what distinguishes data items from data attributes? How is scope determined?arrow_forward
- What are the differences between the objectives of data summarisation and data reduction?arrow_forwardWhich data modelling methods are the most helpful during the period devoted to analysis, and why is it absolutely necessary to make use of these strategies? How do we go about selecting the data points that will be used in the process of modelling?arrow_forwardHow does data quality impact decision-making in organizations, and what are some common data quality issues?arrow_forward
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