field definition

基本解釋

Use the CCSID in the field definition.
使用字段定義中的 CCSID。
By default, a column can contain a NULL value, but if you don't want that, you can append the "NOT NULL" postfix to the field definition.
默認情況下，列可以包含 NULL 值，但是，如果不想這樣，可以在字段定義中附加“NOT NULL”后綴。
For each field definition, the embedded prompt will be read out and the system will wait for the appropriate response before it moves on to the next field.
對于各個字段定義，嵌入的提示將被讀出，并且系統(tǒng)將等待適當?shù)捻憫?yīng)，然后再移至下一個字段。

If we defined food differently: that it's something that nurtures the body, something found in nature, something that doesn't harm the environment-- there are a number of criteria one can apply to define a food-- then we might come up with a different definition than this, but this is the way the nutrition field generally looks at it.
如果我們給出不同的定義,滋養(yǎng)身體的物質(zhì),在自然界找到的物質(zhì),不會威脅到身體的物質(zhì),有很多標準可以拿出來定義食物,我們也許可以就此重新進行定義,但這就是營養(yǎng)學(xué)看待食物的方式
耶魯公開課 - 關(guān)于食物的心理學(xué)、生物學(xué)和政治學(xué)課程節(jié)選

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