In Oracle, if you have two tables related by connecting a primary key in table B and a foreign key in table A, how does the database behave during the insertion of a new record into table A? Question 45 options: 1) It creates a new primary key attribute that is automatically numbered as a sequence of numeric values. 2) It prevents foreign key values from being duplicated in table A. 3) It prevents any records from being deleted from either Table A or Table B. 4) It prevents a row from being inserted into table A if the data in the foreign key column of table A doesn't match any of the values in the primary key column of the table B.

Answered: In Oracle, if you have two tables…

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

Problem 1PE

See similar textbooks

Related questions

Question

In Oracle, if you have two tables related by connecting a primary key in table B and a foreign key in table A, how does the database behave during the insertion of a new record into table A?

Question 45 options:

1)	It creates a new primary key attribute that is automatically numbered as a sequence of numeric values.

2)	It prevents foreign key values from being duplicated in table A.

3)	It prevents any records from being deleted from either Table A or Table B.

4)	It prevents a row from being inserted into table A if the data in the foreign key column of table A doesn't match any of the values in the primary key column of the table B.

Expert Solution

Step 1

For Inserting a Foreign key in any table , it is mandatory that the same key should be present as primary key in the another table.

The above concept can be understood by the following example:-

Insertion Case:-

Suppose You are a student enrolled in a college, also your name is enrolled in college library. Now first thing is no one can take direct enrollment in library as long as he/she is not enrolled in college main admission list.

Deletion Case:-

Now suppose you want to leave the college so first your name should be removed from college main admission list and since now it is not present in main list therefore it must be removed from library enrollment list also.

Step by step

Solved in 2 steps

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions