🚀 go-pugleaf

Let`s say we have such that DB:

CREATE TABLE Docs
(
number        CHAR(9)  NOT NULL PRIMARY KEY,
id            CHAR(11) NOT NULL UNIQUE,
purchase_date DATE
);

CREATE TABLE Persons
(
id      CHAR(11) NOT NULL PRIMARY KEY,
number  CHAR(9)
        CONSTRAINT FK_PERSONS_DOCS NOT NULL UNIQUE
                                          REFERENCES docs(number),
name    VARCHAR(20),
surname VARCHAR(20)
);

ALTER TABLE Docs
      ADD CONSTRAINT FK_DOCS_PERSONS
                  FOREIGN KEY(id)
                  REFERENCES persons(id);
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Now if I want to add some data like:
    INSERT INTO Dowody VALUES('23','79010500873',CAST( '26.12.2002' AS
DATE ) )

There is an SQL error:
    Violation of FOREIGN KEY constraint "FK_DOWOD_OSOBA" on table "DOWODY"
    Statement: INSERT INTO Dowody VALUES('23','79010500873',CAST(
'26.12.2002' AS                 DATE ) )

Anyone knows how to deferre constraints such like in SQL-92 standard, or
how to solve this problem without dropping constraints ?