Which of the following is NOT TRUE about the STUDENTS table structure?Field/Column NameData Type / SizeConstraintSIDNUMBER(10)Primary KeyNameVARCHAR2(25)Not NullEmailVARCHAR2(25)Uniquea.Name must have a value.b.SID must have a value and it can contain duplicate values.c.Email must not have any duplicate value.d.All columns have constraints.

Answered: a. Name must have a value. b. SID must…

a. Name must have a value. b. SID must have a value and it can contain duplicate values. c. Email must not have any duplicate value. d. All columns have constraints.

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter3: Table Creation And Management

Section: Chapter Questions

Problem 1MC: Which of the following is a correct statement? You can restore the data deleted with the DROP COLUMN...

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SQL

SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.

Queries

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Question

Which of the following is NOT TRUE about the STUDENTS table structure?

Field/Column Name	Data Type / Size	Constraint
SID	NUMBER(10)	Primary Key
Name	VARCHAR2(25)	Not Null
Email	VARCHAR2(25)	Unique

Name must have a value.

SID must have a value and it can contain duplicate values.

Email must not have any duplicate value.

All columns have constraints.

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