Since many firms retailer their crucial enterprise knowledge in Oracle databases, it’s advantageous to carry out random sampling throughout the identical atmosphere utilizing SQL with out knowledge motion. For instance, it’s time-consuming to tug a big knowledge set out of a database and do random sampling utilizing Python on a laptop computer laptop. As well as, the info are susceptible to varied safety points as soon as they aren’t protected by the database.
A Competitors-winning knowledge scientist and long-time Oracle SQL practitioner Dr. Jay Zhou creates an internet course and shares his experience in performing random sampling utilizing Oracle SQL. College students will study sensible abilities that may be utilized instantly of their work. There have been a whole lot of individuals from 85 international locations who took the course.
The course begins with an outline of situations the place random sampling is important. Quite a few helpful Oracle SQL random features are launched. The course makes use of examples and presents SQL scripts to carry out the next frequent duties.
- Methods to shortly view random samples of the info. There are a number of methods to do that process.
- Methods to choose a exact variety of samples randomly.
- Methods to break up knowledge randomly. This can be a needed process once we construct a machine studying mannequin and wish to supply three knowledge units, i.e., coaching, testing, and validation units.
- Methods to choose random samples by teams. For instance, we wish to randomly choose 100 college students, 50 of them feminine and 50 male, from a college.
Are there any course necessities or stipulations?
Very primary Oracle SQL data
Who this course is for?
SQL builders, knowledge analysts, knowledge scientists, statisticians