Stores authentication and other security mappings

History of backups performed using nBackup

Names and describes the character sets available in the database

Cross references between the names of constraints (NOT NULL constraints, CHECK constraints and ON UPDATE and ON DELETE clauses in foreign key constraints) and their associated system-generated triggers

Collation sequences for all character sets

Basic information about the database

A list of users granted the CREATE DATABASE privilege when using the specified database as a security database

Information about dependencies between database objects

Custom database exceptions

Column and domain definitions, both system and custom

Dimensions of array columns

Information about secondary files and shadow files

Information about BLOB filters

Information about changes in the formats of tables

Information about external functions

Attributes of the parameters of external functions

Information about generators (sequences)

Segments and index positions

Definitions of all indexes in the database (system- or user-defined)

Not used in the current version

Stores the definition (header and body) of SQL packages

Information about database pages

Definitions of stored procedures

Parameters of stored procedures

Definitions of referential constraints (foreign keys)

Headers of tables and views

Definitions of all table-level constraints

Top-level definitions of table columns

Role definitions

Access control lists

State of multi-database transactions

Trigger definitions

Trigger messages

Definitions of enumerated data types

SQL privileges granted to system users

Tables that are referred to in view definitions: one record for each table in a view