资讯

For National 5 Computing Science, revise the use of primary and foreign keys and the difference between flat file and relational databases.
In summary, primary keys and foreign keys in SQL, when viewed through the lens of Fortnite, illustrate the importance of unique identifiers and collaborative relationships within a database.
When working on a multidimensional design, every fact table within scope should be handled with care. In an ideal world, each low-level fact table represents the metrics related to a business event.