When files must be related (customers to orders, vendors to purchases, etc.), a relational database manager is used, not a flat file manager. Flat files can be related, but only if the ...

Excel possesses formidable database powers. Creating a relational database starts with a Master table that links it to subordinates, called (awkwardly) Slave, Child, or Detail tables. Before we ...

The file system is fine, and metadata would be better off in document database. 9. Classified ads: A high-scale, lots of users in and out, with mostly short-and-sweet content.