The SAS SQL Library for C is a collection of C functions that enables you to use SQL to access data in SAS data sets and DBMSs . A library engine also determines the fundamental processing characteristics of a SAS data library , presents lists of files for the library directory, and supports view engines . The logical name for a SAS data library . The libref can be up to eight characters long. The first character must be a letter or an underscore.
Subsequent characters can be letters, numeric digits, or underscores.
Blanks and special characters are not allowed. The SAS data file structure can have many of the characteristics of a database management system, including indexing, compression, and password protection. SAS data library a collection of one or more SAS files that are recognized by SAS software. On some hosts, the SAS data library is a single file. On most hosts, however, a SAS data library is a directory.