Principles of Information Systems (MindTap Course List)
13th Edition
ISBN: 9781305971776
Author: Ralph Stair, George Reynolds
Publisher: Cengage Learning
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Chapter 5, Problem 1DQ
Program Plan Intro
Data cleansing:
Data cleansing or scrubbing is a step in the data reconciliation process.
- In this step, the problems or the errors in the data are identified and rejected.
- Then, to fix the errors, the flag message is sent back to the source.
Common tasks in data cleansing:
- The data are decoded in such a way that it suits the form of the data warehousing applications.
- Breaking the text fields into constituent parts.
- Represent the data in the required standardized formats.
- Format the data type of the data with the standard data type format.
- Same attribute on different time is added with the timestamp.
- Convert the different units in the data into a same unit.
- For each row, the primary key is generated in the table.
- Matching data are extracted and grouped together.
- Logging errors are detected and fixed.
- The missed data are found out to continue the subsequent loading.
Program Plan Intro
Data cleansing:
Data cleansing or scrubbing is a step in the data reconciliation process.
- In this step, the problems or the errors in the data are identified and rejected.
- Then, to fix the errors, the flag message is sent back to the source.
Common tasks in data cleansing:
- The data are decoded in such a way that it suits the form of the data warehousing applications.
- Breaking the text fields into constituent parts.
- Represent the data in the required standardized formats.
- Format the data type of the data with the standard data type format.
- Same attribute on different time is added with the timestamp.
- Convert the different units in the data into a same unit.
- For each row, the primary key is generated in the table.
- Matching data are extracted and grouped together.
- Logging errors are detected and fixed.
- The missed data are found out to continue the subsequent loading.
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Chapter 5 Solutions
Principles of Information Systems (MindTap Course List)
Ch. 5.1 - Prob. 1RQCh. 5.1 - Which attribute would you designate as the primary...Ch. 5.1 - Prob. 1CTQCh. 5.1 - Prob. 2CTQCh. 5.2 - Prob. 1RQCh. 5.2 - Prob. 2RQCh. 5.2 - Prob. 1CTQCh. 5.2 - Prob. 2CTQCh. 5.3 - Prob. 1RQCh. 5.3 - Prob. 2RQ
Ch. 5.3 - What additional questions need to be answered...Ch. 5.3 - Prob. 2CTQCh. 5.4 - Prob. 1RQCh. 5.4 - Telefonica Brasil is one of the largest...Ch. 5.4 - Prob. 1CTQCh. 5.4 - Prob. 2CTQCh. 5.5 - Prob. 1RQCh. 5.5 - Prob. 2RQCh. 5.5 - Why is it unlikely that a traditional SQL database...Ch. 5.5 - Prob. 2CTQCh. 5 - Prob. 1SATCh. 5 - Prob. 2SATCh. 5 - Prob. 3SATCh. 5 - The ______________ model is a simple but highly...Ch. 5 - The ability to combine two or more tables through...Ch. 5 - Prob. 6SATCh. 5 - Prob. 7SATCh. 5 - Prob. 8SATCh. 5 - Prob. 9SATCh. 5 - Prob. 10SATCh. 5 - Prob. 11SATCh. 5 - Prob. 12SATCh. 5 - Prob. 13SATCh. 5 - Prob. 14SATCh. 5 - Prob. 15SATCh. 5 - Prob. 16SATCh. 5 - Prob. 1RQCh. 5 - In the hierarchy of data, what is the difference...Ch. 5 - Prob. 3RQCh. 5 - What is meant by data archiving? Why is this an...Ch. 5 - What is an entity-relationship diagram, and what...Ch. 5 - Identify four basic data manipulations performed...Ch. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQCh. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - Prob. 15RQCh. 5 - Prob. 16RQCh. 5 - Prob. 17RQCh. 5 - Prob. 1DQCh. 5 - Outline some specific steps an organization might...Ch. 5 - SQL databases conform to ACID properties. Briefly...Ch. 5 - Prob. 4DQCh. 5 - Prob. 6DQCh. 5 - Prob. 8DQCh. 5 - Prob. 1PSECh. 5 - Describe the role of a database administrator....Ch. 5 - Prob. 2CECh. 5 - Prob. 1CTQ1Ch. 5 - Prob. 2CTQ1Ch. 5 - Prob. 3CTQ1Ch. 5 - Prob. 1CTQ2Ch. 5 - Prob. 2CTQ2Ch. 5 - Prob. 3CTQ2
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