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Jackie J. Ling changed their profile picture 11 years, 8 months ago
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Jackie J. Ling commented on the post, Q&A: Guest Lecture Bonus, on the site DATA ANALYTICS @ MIS2502 /S2 11 years, 10 months ago
A example of data-driven decision made by Wawa was the implementation process of a new product. Wawa would introduce the product into a small sample of stores and then analyze if the product help increase sales. […]
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Jackie J. Ling commented on the post, Q&A : True or False, on the site DATA ANALYTICS @ MIS2502 /S2 11 years, 11 months ago
True. Transactional data is constantly changing and updating live. Data cubes only capture historical data.
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Jackie J. Ling commented on the post, Q&A: Week 9 (100 second reflection), on the site DATA ANALYTICS @ MIS2502 /S2 11 years, 11 months ago
In week 9, we were introduced to big data which include the 3 V’s (Volume, Variety, and Velocity). In order to make the information useful we have to mine the data. SAS is an application that can help us mine the […]
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Jackie J. Ling commented on the post, Q&A: Week 7 (100 second reflection), on the site DATA ANALYTICS @ MIS2502 /S2 11 years, 11 months ago
During week 7, I learned about extract, transform and load(ETL). Data is extracted from the operational data store and then transmitted into an analytic form. We also learned several excel formulas to easily merge […]
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Jackie J. Ling commented on the post, Bonus Marks: SAS Account Setup, on the site DATA ANALYTICS @ MIS2502 /S2 11 years, 12 months ago
Username: tuc53798
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Jackie J. Ling commented on the post, Q&A: Week 5 (100 second reflection), on the site DATA ANALYTICS @ MIS2502 /S2 12 years ago
In week 5, we learned more SQL commands such as Insert Into, Update, Delete From, and Alter Table. As well as more syntax to get us more comfortable with SQL. We practiced the new commands with in class exercises.
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Jackie J. Ling commented on the post, Q&A: Week 2 (100 second reflection), on the site DATA ANALYTICS @ MIS2502 /S2 12 years, 1 month ago
This week, I learned about entity relationship diagrams. ERDs can be used to model relational databases. There is different possible cardinality such as one to one, one to many, or many to many. By using a ERD, […]
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Jackie J. Ling commented on the post, Q&A: Week 2, on the site DATA ANALYTICS @ MIS2502 /S2 12 years, 1 month ago
Referential integrity is a set of rules that will be enforced when you delete, modify, or add data in a table to ensure the relationship between two tables remain consistent. The relationship between tables is […]