Handle unstructured data in R and Python by leveraging appropriate libraries and techniques. In Python, use libraries like NLTK, spaCy, or TextBlob for natural language processing.

Learn how to handle multiple hierarchies in dimension tables using different dimensional modeling techniques, such as single, multiple, bridge, or role-playing dimensions.

Working with files in Python is pretty easy. But there’s a common mistake that can sneak into your code. Not closing the file ...