Null represents an intentional absence of a value, indicating a variable has been declared but has yet to be assigned a value. These are some of the most common methods for checking for null and values loosely equal to null in JavaScript.
A fact table contains quantitative data from a business process. Dimension tables store qualitative data that provide context for the facts. Together, they are the core components of the star schema used in data warehouse modeling.
A non-relational database (or NoSQL database) is a data storage system that allows flexible, schema-less organization of information using formats like documents, key-value pairs, graphs or wide-column structures.
