Examination question bank management skills in the MySQL table structure design of the online examination system

Examination question bank management skills in the MySQL table structure design of the online examination system

1. Introduction
With the rapid development of the Internet, the education field has also begun to use The online platform conducts online teaching and examinations. As a convenient and fast examination form, the online examination system has been favored by a large number of educators and student groups. One of the core components of the online examination system is question bank management. This article will analyze the examination question bank management techniques in the MySQL table structure design of the online examination system and give specific code examples.

2. Problem Analysis
The question bank management module in the online examination system needs to implement the following functions:

1. Add, delete, and modify questions: Administrators can add, delete, and modify at any time topic.
2. Category management of questions: Questions can be managed according to different categories, such as single-choice questions, multiple-choice questions, fill-in-the-blank questions, etc.
3. Difficulty level management of questions: Questions can be managed according to difficulty levels, such as easy, medium, difficult, etc.
4. Tag management of topics: Tags can be added to topics to facilitate search and classification management.
5. Import and export of questions: Supports batch import and export of questions to facilitate question bank maintenance and migration.

3. Database design
Based on the analysis of the above issues, we can design the following table structure to manage the examination question bank:

1. Question table (question_table): storage of questions Basic information, including question ID, question type, question content, correct answer and other fields.
2. Category table (category_table): stores the classification information of the topic, including fields such as category ID, category name, etc.
3. Difficulty level table (difficulty_table): stores the difficulty level information of the question, including fields such as difficulty level ID, difficulty level name, etc.
4. Tag table (tag_table): stores the tag information of the topic, including tag ID, tag name and other fields.
5. Question-category association table (question_category_table): A table used for many-to-many relationships, recording the association between questions and categories.
6. Question-difficulty level association table (question_difficulty_table): A table used for many-to-many relationships, recording the association between questions and difficulty levels.
7. Question-tag association table (question_tag_table): A table used for many-to-many relationships, recording the association between questions and tags.

The specific table structure design and sample code are given below:

(1) Design of question table (question_table):
Field name type description
question_id int Question ID
question_type varchar(10) Question type
content text Question content
answer text Correct answer

Sample code:
CREATE TABLE question_table (
question_id INT PRIMARY KEY AUTO_INCREMENT ,
question_type VARCHAR(10) NOT NULL,
content TEXT NOT NULL,
answer TEXT NOT NULL
);

(2) Design of category table (category_table):
Field name type description
category_id int Category ID
category_name varchar(20) Category name

Sample code:
CREATE TABLE category_table (
category_id INT PRIMARY KEY AUTO_INCREMENT,
category_name VARCHAR(20) NOT NULL
);

(3) Design of difficulty level table (difficulty_table):
Field name type description
difficulty_id int Difficulty level ID
difficulty_name varchar(10) difficulty level name

Sample code:
CREATE TABLE difficulty_table (
difficulty_id INT PRIMARY KEY AUTO_INCREMENT,
difficulty_name VARCHAR(10) NOT NULL
);

(4) Design of tag table (tag_table):
Field name type description
tag_id int Tag ID
tag_name varchar(20) Tag name

Sample code:
CREATE TABLE tag_table (
tag_id INT PRIMARY KEY AUTO_INCREMENT,
tag_name VARCHAR(20) NOT NULL
);

(5) Design of question-category association table (question_category_table):
Field name type description
question_id int Question ID
category_id int Category ID

Sample code:
CREATE TABLE question_category_table (
question_id INT NOT NULL,
category_id INT NOT NULL ,
PRIMARY KEY (question_id, category_id),
FOREIGN KEY (question_id) REFERENCES question_table (question_id),
FOREIGN KEY (category_id) REFERENCES category_table (category_id)
);

(6) Design of question-difficulty level association table (question_difficulty_table):
Field name type description
question_id int Question ID
difficulty_id int Difficulty level ID

Sample code:
CREATE TABLE question_difficulty_table (
question_id INT NOT NULL,
difficulty_id INT NOT NULL,
PRIMARY KEY (question_id, difficulty_id),
FOREIGN KEY (question_id) REFERENCES question_table (question_id),
FOREIGN KEY ( difficulty_id) REFERENCES difficulty_table (difficulty_id)
);

(7) Design of question-tag association table (question_tag_table):
Field name type description
question_id int Question ID
tag_id int Tag ID

Sample code:
CREATE TABLE question_tag_table (
question_id INT NOT NULL,
tag_id INT NOT NULL,
PRIMARY KEY (question_id, tag_id),
FOREIGN KEY (question_id) REFERENCES question_table (question_id),
FOREIGN KEY (tag_id) REFERENCES tag_table (tag_id)
);

IV. Summary
The above are the examination question bank management skills in the MySQL table structure design of the online examination system. Through reasonable table structure design, we can implement functions such as addition, deletion, modification, classification management, difficulty level management, tag management, import and export of questions. During specific implementation, appropriate adjustments and expansions can be made according to needs. I hope the above content will be helpful to your online examination system development!

The above is the detailed content of Examination question bank management skills in the MySQL table structure design of the online examination system. For more information, please follow other related articles on the PHP Chinese website!