Depends on your database system.
Timestamps need additional dencoding of a bit set to distinguish timestamps from time intervals internally.
Just have a look at the SCI_ views.
You can find them in the table creation scripts for your database vor example for mysql/mariadb in $BICSUITEHOME/sql/mysql_gen/EXIT_STATE_DEFINTION.SQL:
....
CREATE VIEW SCI_C_DEPENDENCY_DEFINITION AS
, `SE_DEPENDENT_ID` AS `SE_DEPENDENT_ID`
, `SE_REQUIRED_ID` AS `SE_REQUIRED_ID`
, CASE `UNRESOLVED_HANDLING` WHEN 1 THEN 'IGNORE' WHEN 2 THEN 'ERROR' WHEN 3 THEN 'SUSPEND' WHEN 4 THEN 'DEFER' WHEN 5 THEN 'DEFER_IGNORE' END AS `UNRESOLVED_HANDLING`
, CASE `DMODE` WHEN 1 THEN 'ALL_FINAL' WHEN 2 THEN 'JOB_FINAL' END AS `DMODE`
, CASE `STATE_SELECTION` WHEN 0 THEN 'FINAL' WHEN 1 THEN 'ALL_REACHABLE' WHEN 2 THEN 'UNREACHABLE' WHEN 3 THEN 'DEFAULT' END AS `STATE_SELECTION`
, `CONDITION` AS `CONDITION`
, CASE `RESOLVE_MODE` WHEN 0 THEN 'INTERNAL' WHEN 1 THEN 'EXTERNAL' WHEN 2 THEN 'BOTH' END AS `RESOLVE_MODE`
, `EXPIRED_AMOUNT` AS `EXPIRED_AMOUNT`
, CASE `EXPIRED_BASE` WHEN 0 THEN 'MINUTE' WHEN 1 THEN 'HOUR' WHEN 2 THEN 'DAY' WHEN 3 THEN 'WEEK' WHEN 4 THEN 'MONTH' WHEN 5 THEN 'YEAR' END AS `EXPIRED_BASE`
, `SELECT_CONDITION` AS `SELECT_CONDITION`
, `CREATOR_U_ID` AS `CREATOR_U_ID`
, from_unixtime((`CREATE_TS` & ~1125899906842624)/1000) AS `CREATE_TS`
, `CHANGER_U_ID` AS `CHANGER_U_ID`
, from_unixtime((`CHANGE_TS` & ~1125899906842624)/1000) AS `CHANGE_TS`
FROM DEPENDENCY_DEFINITION
WHERE VALID_TO = 9223372036854775807;
...