To define a library, you assign it a library name and specify a path, such as a directory. (It's a good idea to create the directory or other storage location before defining the library.)

You also specify an engine, which is a set of internal instructions SAS software uses for writing to and reading from files in a library.

In the upcoming practice, take a look at the engines available for creating libraries. Depending on your operating environment, you can create libraries with various engines that allow you to read different file formats, including file formats from other vendors.