Indexes are fundamental to database performance, but too often, they’re treated as “set it and forget it” structures. As the data landscape evolves—with hybrid cloud deployments, real-time analytics, ...

In today’s real-time world, companies must deal with data in a different way than they did 10 years ago. Enterprise technology and the amount of data being collected have evolved and increased. Modern ...

A tabular file has nothing comparable to a segment. The concept of data segments is one of the things that makes a hierarchical database different from a SAS data set and other tabular files. The rows ...

To create an access descriptor using the ACCESS procedure, you must first enter the database definition. IMS-DL/I does not store descriptive information about databases in a dictionary or database.