Sybase IQ system tables contain all of the information the database server needs to manage your Sybase IQ system. The system tables reside in the catalog store, and are sometimes called catalog tables. Access to system tables is only through system views. The SYS user ID owns the system tables.
Among the information in the system tables is:
Database characteristics
Table characteristics, including table definitions and information about the size and location of each table
Information about indexes
Current settings for database and dbisql options
System views present the information from their corresponding system tables in a more readable format.
For a complete description of system tables and views and their contents, see Chapter 8, “System Tables and Views,” in Reference: Building Blocks, Tables, and Procedures.