1) Write a query in SQL to create all the information of the student's class: Relation Name: myClass2022 classNumb subjectCo courseNam classSiz classLocati er de e on 100 100-math Precalculus 25 First Floor 200-comp Programmi 20 ng 201 Second Floor 102 241-infs Database 30 First Floor 303 300-cnet Network 30 Third Floor 2) Use what you have learned in the lab classes to indicate the data types and length for every attribute and add the following: • Make sure that classNumber column is not null at any circumstances. • Make sure that the default value for the classLocation is 'Ground Floor'. • Make sure that the classSize cannot be exceed 40 students. (that means from 0 to 40) • Make sure that subjectCode column is Primary key. Make sure that courseName attribute is unique. 3) Use what you have learned in the lab classes to change the name of (courseName) column to be (subjectName) and then insert the 4 records as shown below: classNumb subjectCo subjectNam classSiz classLocati er de e on 100 100-math Precalculus 25 First Floor 201 200-comp Programmi 20 Second Floor ng 102 241-infs Database 30 First Floor 303 300-cnet Network 30 Third Floor

1) Write a query in SQL to create all the information of the student's class: Relation Name: myClass2022 classNumb subjectCo courseNam classSiz classLocati er de e on 100 100-math Precalculus 25 First Floor 200-comp Programmi 20 ng 201 Second Floor 102 241-infs Database 30 First Floor 303 300-cnet Network 30 Third Floor 2) Use what you have learned in the lab classes to indicate the data types and length for every attribute and add the following: • Make sure that classNumber column is not null at any circumstances. • Make sure that the default value for the classLocation is 'Ground Floor'. • Make sure that the classSize cannot be exceed 40 students. (that means from 0 to 40) • Make sure that subjectCode column is Primary key. Make sure that courseName attribute is unique. 3) Use what you have learned in the lab classes to change the name of (courseName) column to be (subjectName) and then insert the 4 records as shown below: classNumb subjectCo subjectNam classSiz classLocati er de e on 100 100-math Precalculus 25 First Floor 201 200-comp Programmi 20 Second Floor ng 102 241-infs Database 30 First Floor 303 300-cnet Network 30 Third Floor

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

1) Write a query in SQL to create all the information of the student's class:
Relation Name: myClass2022
classNumb subjectCo
courseNam classSiz
classLocati
er
de
e
on
100
100-math
Precalculus
25
First Floor
201
200-comp
Programmi 20
Second
ng
Floor
102
241-infs
Database
30
First Floor
303
300-cnet
Network
30
Third Floor
2) Use what you have learned in the lab classes to indicate the data types and
length for every attribute and add the following:
Make sure that classNumber column is not null at any circumstances.
Make sure that the default value for the classLocation is 'Ground Floor'.
• Make sure that the classSize cannot be exceed 40 students. (that means
from 0 to 40)
• Make sure that subjectCode column is Primary key.
• Make sure that courseName attribute is unique.
3) Use what you have learned in the lab classes to change the name of
(courseName) column to be (subjectName) and then insert the 4 records as
shown below:
classNumb subjectCo subjectNam classSiz classLocati
er
de
e
e
on
100
100-math
Precalculus 25
First Floor
201
200-comp
Programmi
20
Second
ng
Floor
102
241-infs
Database
30
First Floor
303
300-cnet
Network
30
Third Floor
4) Just update the subjectName of the classNumber 100 to be Matrix instead of
Student Name:
Student ID
Precalculus.
5) Just delete the classNumber 201.
6) Just select subjectName, subjectCode, and classLocation of classNumber
303
7) select subjectName where the class is being in the first floor.

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