DP-900 Exam Dumps : Microsoft Azure Data Fundamentals

JSONJSON (JavaScript Object Notation): This is a text file format that uses a human-readable and compact syntax to represent data as a collection of name-value pairs and arrays. JSON files can express complex and nested data structures by using objects and arrays as values123.

A key mechanism that allows Azure Data Lake Storage Gen2 to provide file system performance at object storage scale and prices is the addition of a hierarchical namespace. This allows the collection of objects/files within an account to be organized into a hierarchy of directories and nested subdirectories in the same way that the file system on your computer is organized. With a hierarchical namespace enabled, a storage account becomes capable of providing the scalability and cost-effectiveness of object storage, with file system semantics that are familiar to analytics engines and frameworks.

YES, NO, YES Normalizing decreases throughput for reading (need to make joins), but increases for writing (Less to write, since there are no duplicates)