CREATE TABLE WELL (
 ID_WELL       INTEGER NOT NULL,
 ID_FIELD      INTEGER NOT NULL,
 ...
);

ALTER TABLE WELL ADD CONSTRAINT
PK_WELL
PRIMARY KEY (ID_WELL);

CREATE TABLE RZB_WELL (
 ID_RZBWELL INTEGER NOT NULL,
 ID_WELL    INTEGER NOT NULL,
 ...
);

ALTER TABLE RZB_WELL ADD CONSTRAINT
FK_RZBWELL_WELL
FOREIGN KEY (ID_WELL) REFERENCES WELL (ID_WELL);