14 LAB - Create LessonSchedule table with FK constraints Two tables are created:
2.14 LAB - Create LessonSchedule table with FK constraints
Two tables are created:
-
Horse with columns:
- ID - integer, primary key
- RegisteredName - variable-length string
-
Student with columns:
- ID - integer, primary key
- FirstName - variable-length string
- LastName - variable-length string
Create the LessonSchedule table with columns:
- HorseID - integer with range 0 to 65 thousand, not NULL, partial primary key, foreign key references Horse(ID)
- StudentID - integer with range 0 to 65 thousand, foreign key references Student(ID)
- LessonDateTime - date/time, not NULL, partial primary key
If a row is deleted from Horse, the rows with the same horse ID should be deleted from LessonSchedule automatically.
If a row is deleted from Student, the same student IDs should be set to NULL in LessonSchedule automatically.
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This actually didnt work to resolve my problem...
Heres what I have so far.
CREATE TABLE Horse (
ID SMALLINT UNSIGNED AUTO_INCREMENT,
RegisteredName VARCHAR(15),
PRIMARY KEY (ID)
);
CREATE TABLE Student (
ID SMALLINT UNSIGNED AUTO_INCREMENT,
FirstName VARCHAR(20),
LastName VARCHAR(30),
PRIMARY KEY (ID)
);
-- Your SQL statements go here
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