Table and   View

Tables and views are the two types of SAS data sets. They differ in the kind of information that they contain.

• A table is a collection of data values and their associated descriptive information, arranged and presented in a form that SAS software can recognize and process. Tables store both descriptor information and data values.
  
  
• A view is a set of instructions to SAS software that constructs a logical SAS table. Instead of storing data, a SAS view obtains its descriptor information and data values from other files. The view contains only the logic for accessing the data.
  

 Catalog

A catalog is a specially formatted file that contains a table of contents and entries. The entries serve a variety of utility purposes. The table of contents lists information about the entries, such as the entry name, size, type, description, and date modified.

 Mddb

An Mddb (multidimensional database) is a specialized storage facility that stores summarized data for fast and easy access.