What is the difference between Physical and Logical storage in IMS databases?

Physical storage in IMS databases refers to the actual physical location on disk where the data is stored, while logical storage refers to the way in which the data is organized and accessed within the database.

In physical storage, data is stored in disk blocks or pages, and the database management system manages the physical I/O operations to read and write data. On the other hand, logical storage involves the organization of data into tables, indexes, and other database objects to facilitate efficient data retrieval and manipulation.

The key difference is that physical storage deals with the actual storage medium, while logical storage deals with the high-level organization and accessibility of data within the database.

Understanding the distinction between physical and logical storage is important for database administrators and developers to optimize database performance and ensure data integrity in IMS databases.