
USEDB random_10:postgres:ps LIKE POSTGRES.

USE c2 (att1, att2) FROM random_10:postgres:ps MAPTO c2 (varchar(20), varchar(20)).
USE c3 (att1, att2) FROM random_10:postgres:ps MAPTO c3 (varchar(20), varchar(20)).
USE c4 (att1, att2) FROM random_10:postgres:ps MAPTO c4 (varchar(20), varchar(20)).
USE d1 (att1, att2) FROM random_10:postgres:ps MAPTO d1 (varchar(20), varchar(20)).
USE d2 (att1, att2) FROM random_10:postgres:ps MAPTO d2 (varchar(20), varchar(20)).
USE ex (att1) FROM random_10:postgres:ps MAPTO ex (varchar(20)).

CREATE a (att1, att2) MAPTO a (varchar(20), varchar(20)) KEEP_AFTER_EXECUTION.
CREATE b1 (att1, att2) MAPTO b1 (varchar(20), varchar(20)).
CREATE b2 (att1, att2) MAPTO b2 (varchar(20), varchar(20)).
CREATE c1 (att1, att2) MAPTO c1 (varchar(20), varchar(20)).