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Reading Response DUE IN 6 HOURS

The deadline of this assignment is TODAY (5/4) at 8 p.m. EST I have attached five essays about data cleaning and one sample response in the instruction below. For each essay, write a one page (275~375 words) reading response. Mainly describe what you learnt from the essay, any ideas, any suggestions, any discovers etc. After you finish, please attach documents by same order of essay I attached from top to bottom. This should be an easy task and hopefully you can get it done well! Sample: Through reading Rahm's "Data cleaning: Problems and current approaches", I have gained a broad view of what data cleaning is, what kind of problems we are going to solve and how to solve them. Now I have initial knowledge of the difference between single-source problems and multi-source problems as well as schema problems and instance problems. Currently I deeply realize how important the data cleaning is in the whole process of data warehousing. I also found I actually had some experience of dealing with dirty data. When I studied SQL, I had to deal with primary keys and foreign keys among different tables, which relates to the concept of referential integrity. We often used SSN as sample of primary key (even text book likes to use it as example, professor always tells us it is not a good choice), uniqueness becomes very crucial then. When I ran the queries I wrote, I sometimes could not get the expected results. It may result from the blank of a cell or wrong data. To avoid the occurrence of these problems, data cleaning should be done ahead. The article mentioned there are two approaches of data analysis, which are data mining and data profiling respectively. I took class of data mining last semester and deeply understand how annoying the outliers are and how important the accuracy of data is. For data profiling, I might have no experience but I believe I can learn a lot of it in this class. The concept of metadata is also new for me and I am also eager to learn more about it. The author also mentioned there were little attention of data cleaning in the research of schema translation and schema integration, but more researches have been involved in. I want to know what makes the research emphasis changed.
The deadline of this assignment is TODAY (5/4) at 8 p.m. EST I have attached five essays about data cleaning and one sample response in the instruction below. For each essay, write a one page (275~375 words) reading response. Mainly describe what you learnt from the essay, any ideas, any suggestions, any discovers etc.
Assignment ID
493961
CREATED ON
27 April 2018
COMPLETED ON
28 April 2018
Price
$30
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27 April 2018
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27 April 2018
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27 April 2018
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28 April 2018
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