Tag: T-SQL

database design:

1. Create a DATABASE: SCHOOL 

TABLES

Create the following three tables with the same names and data types as provided below:

CourseMaster

Column Name	Data Type	Remarks
CID	Integer	Primary Key
course name	Varchar(40)	NOT NULL
Category	Char(1)	NULL, Basic/Medium/Advanced
Fee	Small money	NOT NULL; Fee can’t be negative

StudentMaster

Column Name	Data Type	Remarks
SID	TinyInt	Primary Key
StudentName	Varchar(40)	NOT NULL
Origin	Char(1)	NOT NULL, Local/Foreign
Type	Char(1)	NOT NULL, Undergraduate/Graduate

 EnrollmentMaster

Column Name	Data Type	Remarks
CID	Integer	NOT NULL Foreign Key
SID	Tinyint	NOT NULL Foreign Key
DOE	DateTime	NOT NULL
FWF (Fee Waiver Flag)	Bit	NOT NULL
Grade	Char(1)	O/A/B/C

 Using the above table layouts as schema, write T-SQL Statements for the following requirements:

1. List the course-wise total no. of Students enrolled. Provide the information only for students of foreign origin and only if the total exceeds 10.
2. List the names of the Students who have not enrolled in the Java course.
3. List the name of the advanced course where the enrollment by foreign students is the highest.
4. List the names of the students who have enrolled for at least one basic course in the current month.
5. List the names of the Undergraduate, local students who have got a “C” grade in any basic course.
6. List the names of the courses for which no student has enrolled in the month of May 2020.
7. List name, Number of Enrollments, and Popularity for all Courses. Popularity has to be displayed as “High” if the number of enrollments is higher than 50, “Medium” if greater than or equal to 20 and less than 50, and “Low” if the no.  Is less than 20.
8. List the most recent enrollment details with information on Student Name, Course name, and age of enrollment in days.
9. List the names of the Local students who have enrolled for exactly 3 basic courses.
10. List the names of the Courses enrolled by all (every) students.
11. For those enrollments for which fees have been waived, provide the names of students who have got ‘O’’ grades.
12. List the names of the foreign, undergraduate students who have got a grade of ‘C’ in any basic course.
13. List the course name and total no. of enrollments in the current month.

stored procedure

Using the above table layouts as schema, write a stored procedure for the following specifications:

Input Parameters:

Date From (Mandatory), Date To (optional, if not specified, take the current date), &Student ID (Mandatory) 

Requirements:

Course-wise,enrollment-wise in ascending order of course name to be printed. If no enrollment exists for a given course for the period specified, print the course name and the remarks ‘No enrollment for this period’

——————————————————————————————

Enrollment Details of<Student Name > from <FromDate> To <ToDate>

Origin :                                                          Type:

SL.No       Course Name    Date of Enrollment    Fee Waiver? Grade 

                                                                  (Yes/No)

  …             …               ……                              ……      ……

  …             …               ……                              ……      ……

                       Total No. of Courses Enrolled:

The Development of the above-Stored Procedure below using SQL Server:

–Create the database

create database School_DB

go

–To exchange the context

USE School_DB
go

–create CourseMaster table

create table CourseMaster
( CID int Primary Key,
CourseName varchar(40) NOT NULL,
Category char(1) NULL CHECK(Category='B' or Category='M' or Category='A'),
Fee smallmoney NOT NULL CHECK(Fee>0)
)
go

–To see schema of table

sp_help 'CourseMaster'
go

–To view the table

select * from CourseMaster
go

–Insert the values in CourseMaster table

insert into CourseMaster values(1,'SQL Server','M',10000)
insert into CourseMaster values(2,'MSBI','A',20000)
insert into CourseMaster values(3,'Python','B',5000)
insert into CourseMaster values(4,'Data Science using Python','M',90000)
insert into CourseMaster values(5,'C#.NET','B',15000)
insert into CourseMaster values(6,'Java','M',15000)
insert into CourseMaster values(7,'Power BI','A',30000)
insert into CourseMaster values(8,'Oracle','A',30000)
insert into CourseMaster values(9,'MySQL','B',15000)
insert into CourseMaster values(10,'Cobol','B',16000)
insert into CourseMaster values(11,'Cognos','M',40000)
GO

–Create Student table

create table StudentMaster
(
SID TinyInt Primary key,
StudName varchar(40) NOT NULL,
Origin char(1) NOT NULL CHECK(Origin='L' OR Origin='F'),
Type char(1) NOT NULL CHECK(Type='U' OR Type='G')
)
GO

–Insert the values in StudentMaster table

insert into StudentMaster values(100,'Arman','L','U')
insert into StudentMaster values(101,'Jhon','L','G')
insert into StudentMaster values(103,'David','F','G')
insert into StudentMaster values(104,'Rosy','L','U')
insert into StudentMaster values(105,'Mike','F','G')
insert into StudentMaster values(106,'Jessica','L','U')
insert into StudentMaster values(107,'Abhi','L','G')
insert into StudentMaster values(108,'Srinu','L','U')
insert into StudentMaster values(109,'Venkat','F','G')
insert into StudentMaster values(110,'Ram','L','U')
insert into StudentMaster values(111,'Khan','F','G')
insert into StudentMaster values(112,'Laya','F','U')
insert into StudentMaster values(113,'Naresh','F','G')
insert into StudentMaster values(114,'Naveen','F','G')
insert into StudentMaster values(115,'Rahman','F','U')
insert into StudentMaster values(116,'Abosode','F','G')
insert into StudentMaster values(117,'Manikanta','F','G')
insert into StudentMaster values(118,'Lalitha','F','U')
go

–create EnrollMaster

create table EnrollMaster
(
CID INT NOT NULL FOREIGN KEY REFERENCES CourseMaster(CID),
SID TinyInt NOT NULL FOREIGN KEY REFERENCES StudentMaster(SID),
DOE DateTime NOT NULL,
FWF Bit NOT NULL,
Grade char(1) NULL CHECK(Grade='O' OR Grade='A' OR Grade='B' OR Grade='C')
)

–USING THE ABOVE TABLE LAYOUTS AS SCHEMA, WRITE T-SQL STATEMENTS FOR THE FOLLOWING REQUIREMENTS:

1. List the course wise total no. of Students enrolled. Provide the information only for students of foreign origin and only if the total exceeds 10.
2. List the names of the Students who have not enrolled for Java course.
3. List the name of the advanced course where the enrollment by foreign students is the highest.
4. List the names of the students who have enrolled for at least one basic course in the current month.
5. List the names of the Undergraduate, local students who have got a “C” grade in any basic course.
6. List the names of the courses for which no student has enrolled in the month of May 2020.
7. List name, Number of Enrollments and Popularity for all Courses. Popularity has to be displayed as “High” if number of enrollments is higher than 50, “Medium” if greater than or equal to 20 and less than 50, and “Low” if the no. Is less than 20.
8. List the most recent enrollment details with information on Student Name, Course name and age of enrollment in days.
9. List the names of the Local students who have enrolled for exactly 3 basic courses.
10. List the names of the Courses enrolled by all (every) students.

–11. For those enrollments for which fee have been waived, provide the names of students who have got ‘O’ grade.

select StuName,grade
from StudentMaster SM
inner join EnrollMaster EM on SM.sid=EM.sid
where EM.Grade='O' and FWF = 1

–12. List the names of the foreign, undergraduate students who have got grade ‘C’ in any basic course.

select StudName,Origin,Type,Grade,Category
from CourseMaster as CM
inner join EnrollMaster as EM ON CM.CID=EM.CID
inner join StudentMaster as SM ON SM.SID=EM.SID
where SM.Origin='F' and SM.Type='U' and EM.Grade='C' and
CM.Category='B'

–13. List the course name, total no. of enrollments in the current month.

select CourseName,count(*) as Total_No_of_Enroll
from CourseMaster as cm
inner join EnrollMaster as em on cm.cid=em.cid
where datediff(mm,DOE,getdate())=0
group by cm.CourseName