Oracle migration to SQL Server: SQL Server Equivalent to Oracle Global variables

I am working in a Oracle 11g database migration to SQL Server 2012, I did the migration using SSMA v5.3 and all works fine. However, I did re-write code in some objects like triggers and stored procedures because the SSMA did a standard migration. But my questions is about this: The Oracle Db have some packages that use global variables like this code: CREATE OR REPLACE package OPS_TRACKING.pkg_trade_data as -- packaged variable to be used by triggers not to execute during -- archival and resoring process of the trade data archive_restore_flag varchar2(1) := 'N'; procedure p_archive_trade_data( p_trade_id number ); In my case this global variable is called for some triggers like it: CREATE OR REPLACE TRIGGER "OPS_TRACKING"."TG_TRADE_GROUP_AER_DI" after insert or delete on ops_tracking.trade_group for each row declare v_id number; v_trade_id number; begin If pkg_trade_data.archive_restore_flag = 'N' Then if inserting then v_trade_id := :new.trade_id; else v_trade_id := :old.trade_id; end if; select id into v_id from ops_tracking.trade_summary where trade_id = v_trade_id for update nowait; update ops_tracking.trade_summary set transaction_seq=ops_tracking.seq_trade_summary_transaction.nextval ,last_update_timestamp_gmt = sysdate where trade_id = v_trade_id; End If; -- archive_restore_flag end tg_trade_group_aer_di; / As you can see in this trigger the global variable (pkg_trade_data.archive_restore_flag = 'N') is used for take a decision and based in their value the oracle trigger execute the action. I would like to know which is the equivalent or which are my options to migrate this code to SQL 2012. I appreciate your comments and advice's.