Which of the following is NOT TRUE about the STUDENTS table structure? Field/Column Data Type / size Constraint Name SID NUMBER(10) Primary Key Name VARCHAR2(25) Not Null Email VARCHAR2(25) Unique O a. All columns have constraints: O b. Email must not have any duplicate value. O C. Name must havea value. O d. SID must have a value and it can contain duplicate

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Which of the following is NOT TRUE about the STUDENTS
table structure?
t of
Field/Column
Data Type / Size
Constraint
Name
SID
NUMBER(10)
Primary Key
Name
VARCHAR2(25)
Not Null
Email
VARCHAR2(25)
Unique
a. All columns have constraints.
O b. Email must not have any duplicate value.
O c. Name must have a value.
O d. SID must have a voalue and it can contain duplicate
values.
Transcribed Image Text:Which of the following is NOT TRUE about the STUDENTS table structure? t of Field/Column Data Type / Size Constraint Name SID NUMBER(10) Primary Key Name VARCHAR2(25) Not Null Email VARCHAR2(25) Unique a. All columns have constraints. O b. Email must not have any duplicate value. O c. Name must have a value. O d. SID must have a voalue and it can contain duplicate values.
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