​Structure of the ORDERITEMS Table

question 55

Multiple Choice

​Structure of the ORDERITEMS table

-Based on the structure of the ORDERITEMS table,which of the following commands will add a NOT NULL constraint to the ISBN column?​

• A) ​ALTER TABLE orderitems ADD (isbn NOT NUL
• L);
• B) ​ALTER TABLE orderitems ADD NOT NULL (isbn);
• C) ​ALTER TABLE orderitems ADD isbn NOT NULL;
• D) ​none of the above

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Definitions:

Pooled Estimate

A combined estimate derived from two or more sample estimates, often used in hypothesis testing or meta-analysis.

Two-Sample Procedure

A statistical method used to compare two independent samples to test a hypothesis about the difference between population parameters.

Common Variance

The shared variance between variables in a statistical model, often referring to the portion of variability that is accounted for by a common factor.

Degrees of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution, typically in the context of parameters estimated from sample data.