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學生對 加州大学戴维斯分校 提供的 SQL for Data Science 的評價和反饋

4.6
9,837 個評分
2,551 條評論

課程概述

As data collection has increased exponentially, so has the need for people skilled at using and interacting with data; to be able to think critically, and provide insights to make better decisions and optimize their businesses. This is a data scientist, “part mathematician, part computer scientist, and part trend spotter” (SAS Institute, Inc.). According to Glassdoor, being a data scientist is the best job in America; with a median base salary of $110,000 and thousands of job openings at a time. The skills necessary to be a good data scientist include being able to retrieve and work with data, and to do that you need to be well versed in SQL, the standard language for communicating with database systems. This course is designed to give you a primer in the fundamentals of SQL and working with data so that you can begin analyzing it for data science purposes. You will begin to ask the right questions and come up with good answers to deliver valuable insights for your organization. This course starts with the basics and assumes you do not have any knowledge or skills in SQL. It will build on that foundation and gradually have you write both simple and complex queries to help you select data from tables. You'll start to work with different types of data like strings and numbers and discuss methods to filter and pare down your results. You will create new tables and be able to move data into them. You will learn common operators and how to combine the data. You will use case statements and concepts like data governance and profiling. You will discuss topics on data, and practice using real-world programming assignments. You will interpret the structure, meaning, and relationships in source data and use SQL as a professional to shape your data for targeted analysis purposes. Although we do not have any specific prerequisites or software requirements to take this course, a simple text editor is recommended for the final project. So what are you waiting for? This is your first step in landing a job in the best occupation in the US and soon the world!...

熱門審閱

JP
2020年4月5日

This course has really helped with optimizing queries that I work with everyday, enhancing my understanding of RDBMS, joins, analyzing and structuring exactly what you need and yielding those results.

AL
2020年8月21日

A comprehensive course that covers major aspects of query building and retrieval in a management system. The topics were delivered well and the materials/assignments were relevant for skill-building.

篩選依據:

2476 - SQL for Data Science 的 2500 個評論(共 2,543 個)

創建者 Sajiri V

2021年5月14日

The lectures were not easy to comprehend for a computer language. Though the course mentions it is a beginner-level course, the lecturer jumps to a certain part where there is a learning curve expected.

創建者 Ligeng X

2018年9月27日

A little too easy, not challenging at all, given this is a beginner level class, I'll give it two stars. You could finish the whole course on Saturday if you get up early plus Sunday if you do not.

創建者 Zoe

2020年5月13日

I wish that the instructor used examples that mirrored the type of questions in the coding exams. We did not cover all the material in the coding exam.

創建者 Darren R

2019年9月27日

The structure and guidance provided on the final assignment was very poor, resulting in far more time required to complete than expected.

創建者 Riccardo B

2020年3月27日

too much theory, I needed something more 'pratical' that allowed me to start using and write code and not see a lot of slide with code

創建者 SARTHAK S

2020年10月27日

1.Very basic course.

2. Assignments level does not match with training level.

3. Need to provide class which includes query writing.

創建者 Carolina E

2019年6月24日

The teacher was not readily available to answer questions. The course was alright but I do not feel prepared to use my skills yet.

創建者 Mathias M

2020年3月19日

Very slow and badly organised start of the course with no to very little practice of how to use SQLite before the coding quiz.

創建者 Seidler C

2021年4月28日

The first exercises are still ok. But the final exam is really a mess. The questions are not as precise as they should be.

創建者 Yash K

2020年8月5日

Too much talking in videos with less examples. The exercises were vague and not enough information was given to solve them

創建者 Bill P

2020年12月1日

The videos had the wrong emphasis, and were far too long.

More time should have been devoted to the exercises/quizzes.

創建者 Christos A

2020年4月23日

Not satisfied. There are better MOOCs for SQL/Data Science out there. I wouldn't recommend it for a SQL beginner.

創建者 Bram M

2021年3月9日

The course is good in itself, but answers circulate on the internet, making the certificate not very meaningful.

創建者 Naomy A

2019年12月16日

there is a lot of questions about how the questions were asked, i highly recommend you do see the discussions

創建者 Neeli K

2020年3月3日

Not enough examples were shared.

Certain concepts were explained without telling their underlying basics.

創建者 Eslam R M A

2018年11月3日

There are few examples about every lesson, and may not have examples for some lessons

創建者 Billy S

2019年7月29日

The presentation and speaker

創建者 Adriana R

2020年4月10日

Not the best for beginners

創建者 Inês M D C

2020年4月22日

Didn't like the teacher.

創建者 Ahmed E

2020年12月17日

Not enough Examples

創建者 qizhou c

2020年2月21日

Too hard

創建者 Brian M

2021年5月25日

Average

創建者 Heiko K

2020年2月25日

The course is overall very high in quality and I found it really useful. The teacher explains the concepts really well and the exercises are very good. I really found joy doing the final course assignment. However, I feel that I got tricked into paying one more month of subscription, seconds after I paid for another month, I did receive the course certificate. I submitted the peer graded assignment one week ago. My plan was to continue with the other courses in this specialisation but after my experience with this subscription/payment philosophy, I will not discontinue and look for other online platforms with a better customer experience for me. Thank you nonetheless for the high quality of this course, I am certain many learners find the material extremely helpful, as did I.

創建者 Sara F

2020年1月3日

Terrible and frustrating. My previous knowledge was literally zero, so I did learn something at the end,but the lectures are poor and non stimulating at all. Worst of all, the exercises are awful. Most of the time the task is not clear, there are no example to guide you and the material given in the lectures are most of the time totally useless. I felt very frustrated. Not a completely waste of time, but I would never recommend this course to anyone. I really wanted to learn something, but everything was against it. I speak to the creator of this class, seriously try to do this course pretending you are new to this topic. I will be clear it is very very very bad designed.

創建者 Noel C

2019年9月30日

The first two weeks were easy to follow along with. Unfortunately after that the course was severely lacking. There were not good explanations of things and new things would be added in that hadn’t been covered. When you post questions the mentors aren’t much help and the students will try to answer if they can. There’s also no way to practice. I also would’ve found it nice to see the tables they were pulling their “examples” from. I had to use other resources to actually study and learn SQLite. I’m assuming the people who gave this course a high score are already familiar with SQLite and just wanted the certificate.