Description:
This is the budget data for one period (e.g. a month)

PRIMARY KEY
a_budget_sequence_i integer NOT NULL		a_budget
a_period_number_i integer default: 0 NOT NULL

a_budget_base_n numeric (24, 10) default: 0	Budget amount in base currency
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 a_budget_period_fk1: a_budget_sequence_i => a_budget a_budget_period_fkcr: s_created_by_c => s_user a_budget_period_fkmd: s_modified_by_c => s_user