You can find a complete definition of the system tables in the Reference Manual: SAP DB 7.3 ®
You can find information about how you
evaluate the information in the system tables in the following sections: COLUMNS CONNECTEDUSERS CONNECTPARAMETERS CONSTRAINTS DBPROCEDURES DBPROCPARAMS DOMAINCONSTRAINTS DOMAINS FOREIGNKEYCOLUMNS FOREIGNKEYS INDEXCOLUMNS INDEXES LOCKS MAPCHARSETS ROLEPRIVILEGES ROLES SEQUENCES SESSION_ROLES SYNONYMS TABLEPRIVILEGES TABLES TERMCHARSETS TRIGGERS USERS VERSIONS VIEWCOLUMNS VIEWDEFS VIEWS