“Martial Arts R Us” (MARU) needs a database. MARU is a martial arts school with hundreds of students. The database must keep track of all the classes that are offered, who is assigned to teach each class, and which students attend each class. Also, it is important to track the progress of each student as they advance.

Students are given a student number when they join the school. The number is stored along with their name, date of birth, and the date they joined the school.

All instructors are also students, but clearly not all students are instructors. In addition to the normal student information, for all instructors, the date that they start working as an instructor must be recorded along with their instructor status (compensated or volunteer).

An instructor may be assigned to teach any number of classes, but each class has one and only one assigned instructor. Some instructors, especially volunteer instructors, may not be assigned to any class.

A class is offered for a specific level at a specific time, day of the week, and location. For example, one class taught on Mondays at 5:00 p.m. in Room 1 is an intermediate-level class. Another class taught on Mondays at 6:00 p.m. in Room 1 is a beginner-level class. A third class taught on Tuesdays at 5:00 p.m. in Room 2 is an advanced-level class.

Students may attend any class of the appropriate level during each week, so there is no expectation that any particular student will attend any particular class session. Therefore, the attendance of students at each individual class meeting must be tracked.

A student will attend many different class meetings, and each class meeting is normally attended by many students. Some class meetings may not be attended by any students. New students may not have attended any class meetings yet.

At any given meeting of a class, instructors other than the assigned instructor may show up to help. Therefore, a given class meeting may have a head instructor and many assistant instructors, but it will always have at least the one instructor who is assigned to that class. For each class meeting, the date of the class and the instructors’ roles (head instructor or assistant instructor) need to be recorded. For example, Mr. Jones is assigned to teach the Monday, 5:00 p.m., intermediate class in Room 1. During a particular meeting of that class, Mr. Jones was the head instructor and Ms. Chen served as an assistant instructor.

Each student holds a rank in the martial arts. The rank name, belt color, and rank requirements are stored. Most ranks have numerous rank requirements, but each requirement is associated with only one particular rank. All ranks except white belt have at least one requirement.

A given rank may be held by many students. While it is customary to think of a student as having a single rank, it is necessary to track each student’s progress through the ranks. Therefore, every rank that a student attains is kept in the system. New students joining the school are automatically given the rank of white belt. The date that a student is awarded each rank should be kept in the system. All ranks have at least one student who has achieved that rank at some time.

QUESTIONS TO ANSWER:

An ERD diagram using Crow's notation has already been answered (Please see attachment) Please design a relational database based on the ERD you developed. Make sure that tables in the database are in 3NF.

Transcribed Image Text:ATTAIN PK,FK1 Rank Num PK,FK2 Stu Num ४ ea ns STUDENT PK Stu_Num Stu_FName Stu_LName Stu_Initial Stu_DOB Stu_Join_Date Stu_Is_Inst H+ INSTRUCTOR PK,FK1 Stu Num Stu_ls_Inst Inst_Hire_Date Inst Status earned completes H HE RANK PK Rank_Num Rank_Name Rank_Belt FIF ATTENDANCE PK,FK1 Meet Num PK,FK2 Stu_Num Attend_Role is assigned includes has PK + REQUIREMENT PK Req_Num Req_Descript FK1 Rank_Num PK MEETING Meet Num Meet Date FK1 Class_ID generates CLASS Class ID Class_Weekday Class_Time Class Location FK1 Stu_Num

Question

“Martial Arts R Us” (MARU) needs a database. MARU is a martial arts school with hundreds of students. The database must keep track of all the classes that are offered, who is assigned to teach each class, and which students attend each class. Also, it is important to track the progress of each student as they advance.

Students are given a student number when they join the school. The number is stored along with their name, date of birth, and the date they joined the school.
All instructors are also students, but clearly not all students are instructors. In addition to the normal student information, for all instructors, the date that they start working as an instructor must be recorded along with their instructor status (compensated or volunteer).
An instructor may be assigned to teach any number of classes, but each class has one and only one assigned instructor. Some instructors, especially volunteer instructors, may not be assigned to any class.
A class is offered for a specific level at a specific time, day of the week, and location. For example, one class taught on Mondays at 5:00 p.m. in Room 1 is an intermediate-level class. Another class taught on Mondays at 6:00 p.m. in Room 1 is a beginner-level class. A third class taught on Tuesdays at 5:00 p.m. in Room 2 is an advanced-level class.
Students may attend any class of the appropriate level during each week, so there is no expectation that any particular student will attend any particular class session. Therefore, the attendance of students at each individual class meeting must be tracked.
A student will attend many different class meetings, and each class meeting is normally attended by many students. Some class meetings may not be attended by any students. New students may not have attended any class meetings yet.
At any given meeting of a class, instructors other than the assigned instructor may show up to help. Therefore, a given class meeting may have a head instructor and many assistant instructors, but it will always have at least the one instructor who is assigned to that class. For each class meeting, the date of the class and the instructors’ roles (head instructor or assistant instructor) need to be recorded. For example, Mr. Jones is assigned to teach the Monday, 5:00 p.m., intermediate class in Room 1. During a particular meeting of that class, Mr. Jones was the head instructor and Ms. Chen served as an assistant instructor.
Each student holds a rank in the martial arts. The rank name, belt color, and rank requirements are stored. Most ranks have numerous rank requirements, but each requirement is associated with only one particular rank. All ranks except white belt have at least one requirement.
A given rank may be held by many students. While it is customary to think of a student as having a single rank, it is necessary to track each student’s progress through the ranks. Therefore, every rank that a student attains is kept in the system. New students joining the school are automatically given the rank of white belt. The date that a student is awarded each rank should be kept in the system. All ranks have at least one student who has achieved that rank at some time.

QUESTIONS TO ANSWER:

An ERD diagram using Crow's notation has already been answered (Please see attachment) Please design a relational database based on the ERD you developed. Make sure that tables in the database are in 3NF.

ATTAIN
PK,FK1 Rank Num
PK,FK2 Stu Num
४
ea ns
STUDENT
PK Stu_Num
Stu_FName
Stu_LName
Stu_Initial
Stu_DOB
Stu_Join_Date
Stu_Is_Inst
H+
INSTRUCTOR
PK,FK1 Stu Num
Stu_ls_Inst
Inst_Hire_Date
Inst Status
earned
completes
H
HE
RANK
PK Rank_Num
Rank_Name
Rank_Belt
FIF
ATTENDANCE
PK,FK1 Meet Num
PK,FK2 Stu_Num
Attend_Role
is assigned
includes
has
PK
+
REQUIREMENT
PK Req_Num
Req_Descript
FK1 Rank_Num
PK
MEETING
Meet Num
Meet Date
FK1 Class_ID
generates
CLASS
Class ID
Class_Weekday
Class_Time
Class Location
FK1 Stu_Num

Accepted Answer

A database is an organized collection of data that is organized and maintained in a manner that…