Unnamed

create table eventtracks (id integer default nextval('pk_eventtracks') primary key,						  kb_id varchar(40) not null,                          track_id varchar(40) not null,                          sat_id varchar(40),                          cause varchar(255),                          unique(kb_id, track_id));                            create table eventslices (id integer default nextval('pk_eventslices') primary key,                          track_id integer not null references eventtracks on delete cascade,                          timestamp bigint not null,                          status boolean,                          certainty float,                          severity int,                          seaes varchar(3),                          eems varchar(3),                          sas varchar(3),                          unique(track_id, timestamp));create table measurands (id integer default nextval('pk_measurands') primary key,						 slice_id integer not null references eventslices on delete cascade,                         measurands varchar(15));