49 lines
1.3 KiB
MySQL
49 lines
1.3 KiB
MySQL
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-- Таблица Teacher
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CREATE TABLE Teacher (
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ID SERIAL PRIMARY KEY,
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Surname VARCHAR(255) NOT NULL,
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Name VARCHAR(255) NOT NULL,
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MiddleName VARCHAR(255)
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);
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-- Таблица Group
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CREATE TABLE "Group" (
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ID SERIAL PRIMARY KEY,
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Name VARCHAR(255) NOT NULL,
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Type INT NOT NULL
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);
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-- Таблица Student
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CREATE TABLE Student (
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ID SERIAL PRIMARY KEY,
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Surname VARCHAR(255) NOT NULL,
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Name VARCHAR(255) NOT NULL,
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MiddleName VARCHAR(255),
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GroupID INT NOT NULL REFERENCES "Group"(ID) ON DELETE CASCADE
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);
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-- Таблица Discipline
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CREATE TABLE Discipline (
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ID SERIAL PRIMARY KEY,
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Name VARCHAR(255) NOT NULL,
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Description TEXT NOT NULL,
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Courses INT NOT NULL,
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TeacherId INT NOT NULL REFERENCES Teacher(ID) ON DELETE CASCADE
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);
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-- Таблица Statement
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CREATE TABLE Statement (
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ID SERIAL PRIMARY KEY,
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TeacherId INT NOT NULL REFERENCES Teacher(ID) ON DELETE CASCADE,
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DisciplineId INT NOT NULL REFERENCES Discipline(ID) ON DELETE CASCADE,
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Date DATE NOT NULL
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);
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-- Таблица StatementStudent (многие ко многим)
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CREATE TABLE StatementStudent (
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ID SERIAL PRIMARY KEY,
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StudentId INT NOT NULL REFERENCES Student(ID) ON DELETE CASCADE,
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StatementId INT NOT NULL REFERENCES Statement(ID) ON DELETE CASCADE,
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Mark INT NOT NULL
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);
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