RDB$SECURITY

Reserved Words and KeywordsMonitoring Tables

`RDB$SECURITY_CLASSES`

RDB$SECURITY_CLASSES stores the access control lists

Column Name Data Type Description

Column Name	Data Type	Description
`RDB$SECURITY_CLASS`	`CHAR(63)`	Security class name
`RDB$ACL`	`BLOB ACL`	The access control list related to the security class.It enumerates users and their privileges
`RDB$DESCRIPTION`	`BLOB TEXT`	Could store comments related to the security class

RDB$SECURITY_CLASS

CHAR(63)

Security class name

RDB$ACL

BLOB ACL

The access control list related to the security class.It enumerates users and their privileges

RDB$DESCRIPTION

BLOB TEXT

Could store comments related to the security class

`RDB$TIME_ZONES`

RDB$TIME_ZONES lists the named time zones supported by the engine.It is a virtual table that is populated using the current time zone database of the Firebird engine.

Column Name Data Type Description

Column Name	Data Type	Description
`RDB$TIME_ZONE_ID`	`INTEGER`	The unique identifier of the time zone as used by Firebird.For example, this identifier is used in the `time_zone` field of the `ISC_TIMESTAMP_TZ` struct if the value has a named zone instead of an offset.
`RDB$TIME_ZONE_NAME`	`CHAR(63)`	Name of the time zone as specified by the time zone database

RDB$TIME_ZONE_ID

INTEGER

The unique identifier of the time zone as used by Firebird.For example, this identifier is used in the time_zone field of the ISC_TIMESTAMP_TZ struct if the value has a named zone instead of an offset.

RDB$TIME_ZONE_NAME

CHAR(63)

Name of the time zone as specified by the time zone database