A PeopleSoft document is made up of two components: a logical component and a physical component.
The logical component of a document, or logical document, specifies the abstract structure of data. It does not specify any information about persistence, formatting, rendering, behavior, and so on.
When you work on the logical aspect of a document, you manage document elements types and data types, define element and data type properties, and so on.
The physical component of a document, or physical document, specifies concrete details about a document, such as database tables, XML tags names, JSON tag names, and so on.
When you work with the physical aspect of a document, you manage schema details, such as target and imported namespace information, whitespace, blank element filters, and more.