https://github.com/pranava007/sql-day-2-task

This is a Database design
https://github.com/pranava007/sql-day-2-task

db-design design mysql sql

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This is a Database design

• Host: GitHub
• URL: https://github.com/pranava007/sql-day-2-task
• Owner: pranava007
• Created: 2024-06-22T09:23:33.000Z (5 months ago)
• Default Branch: main
• Last Pushed: 2024-06-22T09:25:48.000Z (5 months ago)
• Last Synced: 2024-06-22T18:54:27.038Z (5 months ago)
• Topics: db-design, design, mysql, sql
• Homepage:
• Size: 346 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
Table Descriptions:

batch

bat_id: Integer, primary key. Unique identifier for each batch.

bat_name: Variable character string (up to 30 characters). Name of the batch.

domain

dom_id: Integer, primary key. Unique identifier for each domain.

dom_name: Variable character string (up to 30 characters). Name of the domain.

professional

prof_id: Integer, primary key. Unique identifier for each professional.

prof_name: Variable character string (up to 30 characters). Name of the professional.

salary

sal_id: Integer, primary key. Unique identifier for each salary record.

fee

fee_id: Integer, primary key. Unique identifier for each fee record.

mentor

men_id: Integer, primary key. Unique identifier for each mentor.

men_name: Variable character string (up to 50 characters). Name of the mentor.

men_email: Variable character string (up to 50 characters). Email of the mentor.

bat_id: Integer, foreign key. References batch(bat_id).

prof_id: Integer, foreign key. References professional(prof_id).

sal_id: Integer, foreign key. References salary(sal_id).

learners

len_id: Integer, primary key. Unique identifier for each learner.

len_name: Variable character string (up to 50 characters). Name of the learner.

len_email: Variable character string (up to 50 characters). Email of the learner.

bat_id: Integer, foreign key. References batch(bat_id).

dom_id: Integer, foreign key. References domain(dom_id).

fee_id: Integer, foreign key. References fee(fee_id).

DESC Command:

The DESC (or DESCRIBE) command in SQL is used to display the structure of a table. It provides information about the columns in the table, including:

Field: The name of the column.

Type: The data type of the column.

Null: Whether the column can contain NULL values.

Key: If the column is part of a primary key (PRI), foreign key (MUL), or unique key (UNI).

Default: The default value of the column.

Extra: Additional information about the column (e.g., if it is auto-increment).

When you run DESC table_name;, it outputs the schema of the specified table.