Description:
Gives a group access to a specific extract

PRIMARY KEY
s_group_id_c varchar (20) NOT NULL	identifies a system group	s_group
s_group_unit_key_n bigint default: 0 NOT NULL	Field that the group belongs to	s_group
m_extract_id_i integer default: 0 NOT NULL	Identifier for the extract	m_extract_master

s_read_access_l boolean	Control read access to the extract
s_write_access_l boolean	Control write access to the extract
s_delete_access_l boolean	Control delete access to the extract
s_date_created_d date default: CURRENT_DATE	The date the record was created.
s_created_by_c varchar (20)	User ID of who created this record.	s_user
s_date_modified_d date	The date the record was modified.
s_modified_by_c varchar (20)	User ID of who last modified this record.	s_user
s_modification_id_t timestamp default: CURRENT_TIMESTAMP	This identifies the current version of the record.
FOREIGN KEY s_group_extract_fk1: s_group_id_c;s_group_unit_key_n => s_group s_group_extract_fk2: m_extract_id_i => m_extract_master s_group_extract_fkcr: s_created_by_c => s_user s_group_extract_fkmd: s_modified_by_c => s_user