Oracle 12c: SQL
Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Chapter 4, Problem 9RQ

What is the difference between disabling a constraint and dropping a constraint?

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( Please answer this question immediately I do not have time ) Use the following table to answer the questions below:     Table name: Books     Column Name Role Data Type Length Constraint bookID Stores the ID of a book Number 5 Primary key bookTitle Stores the title of a book Varchar2 50 - bookISBN Stores the ISBN of a book Number 13 Cannot be null and duplicated publicationDate Store the publication date of a book Date - Cannot be null bookPrice Stores the price of a book Number 2,2 Cannot be null a. Write in SQL a command that creates the table Books according to the above description b. Write in SQL a statement that adds a new column named publisherID of type Char(10). This column should be defined as a foreign key that relates the table Books to the table Publisher c. Write in SQL a command that deletes the books that are published before 20-Aug-2010 d. Write a SQL query that displays the number of books that are published in the year 2018 e. Write in SQL a…
Domain Constraints means violations in size only Select one: O True O False Key constraint means violation when the primary key value is repeated Select one: O True O False
The expression =IF(A1 > 12, 3*A1, 6*A1) is used in a spreadsheet.Find the result if A1 is 2 Find the result if A1 is 13.

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Oracle 12c: SQL

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