database - Set field as nullable - Oracle Data Modeler

Question

Anyone know where could I set a field in Oracle Data Modeler as nullable? When I generate the script all fields are set as NOT NULL.

Answer 1

取消选中“强制”。确保您没有将其配置为非可选的 PK 或 FK。

为这个表生成 DDL，我可以看到 STREET2 列定义如下：

CREATE TABLE hr.people (
    first_name    VARCHAR2(100 BYTE) NOT NULL,
    middle_init   VARCHAR2(100 BYTE),
    last_name     VARCHAR2(100 BYTE) NOT NULL,
    title         VARCHAR2(100 BYTE),
    email         VARCHAR2(256 BYTE) NOT NULL,
    id            NUMBER
        GENERATED ALWAYS AS IDENTITY ( START WITH 1 MAXVALUE 10000 CACHE 20 ORDER )
    NOT NULL,
    street1       VARCHAR2(100 BYTE) NOT NULL,
    street2       VARCHAR2(100 BYTE),
    street3       VARCHAR2(100 BYTE),
    city          VARCHAR2(100 BYTE) NOT NULL,
    state         VARCHAR2(2 BYTE) NOT NULL,
    zip           VARCHAR2(12 BYTE) NOT NULL,
    country       VARCHAR2(100 BYTE),
    ace           NUMBER(*,0),
    bio_pic       BLOB
)