part A Attempt to violate the primary key constraint and observe the result.part B Attempt to violate the foreign key constraint and observe the result mysql> show create table reserved;+-| Table | Create Tablereserved | CREATE TABLE 'reserved ('stdid` int NOT NULL,'bid' int NOT NULL,'rdate' date NOT NULL,PRIMARY KEY (`stdid`, `bid`),CONSTRAINT 'C2¹ FOREIGN KEY' (`stdid`) REFERENCES `student` (`stdid`)) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci |·+−−1 row in set (0.00 sec)| ‒‒‒‒‒‒‒‒‒‒‒‒

The reserved table in the image has a primary key that consists of two columns, stdid and bid. A…

Answered: part A Attempt to violate the primary…

part A Attempt to violate the primary key constraint and observe the result. part B Attempt to violate the foreign key constraint and observe the result

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

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Concept explainers

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

A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.

Question

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part A Attempt to violate the primary key constraint and observe the result.
part B Attempt to violate the foreign key constraint and observe the result

mysql> show create table reserved;
+-
| Table | Create Table
reserved | CREATE TABLE 'reserved (
'stdid` int NOT NULL,
'bid' int NOT NULL,
'rdate' date NOT NULL,
PRIMARY KEY (`stdid`, `bid`),
CONSTRAINT 'C2¹ FOREIGN KEY' (`stdid`) REFERENCES `student` (`stdid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci |
·+−−
1 row in set (0.00 sec)
| ‒‒‒‒‒‒‒‒‒‒‒‒

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