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MiniDB

MiniDB is a type of key-value like XML Document Database.

This is just a simple implementation, more-like a prototype and My first time doing it. So, The database design might not be as good and nor feature rich.

About the Project

This is my college Project Submission for the following course

  • Course Name: Object Oriented Programming using Java
  • Course Code: IS4C04
  • Course Instructor: Mr. Suhaas KP, Assistant Professor, Department of Information Science and Engineering, The National Institute Of Engineering, Mysuru 570008

Made with

Usage

Use the following commands to perform CRUD operations on this NoSQL Database.

  • list to list all the created databases.
  • new {name} For creating a new database. ({} denotes that name is a variable)
  • use {name} to select the database from the existing ones for CRUD operations.
  • drop {name} to delete a database.
  • schema {} for declaring schema of the database. (NOTE: schema must be declared first to add any data)
  • add {} for adding data to the database. the data is seperated with , and must follow the schema.
  • read to show the all data of the database.
  • delete {id} for deleting data which has specified id.

Example usage

After starting the CLI, you should see the following:

--------------- Welcome to MiniDB ---------------
--------- Made by Chanakya. MIT License ---------
Enter the Commands: (Use 'exit;' to exit the cli)

The following commands creates a database named animal. We declare a schema first since it's important to have a format of data to store in database. Then, we add data that must satisfy the schema format.

new animal
schema id,name,legs
add 1,cat,4
add 2,fish,0

Note: The first element is taken as the id, which is used as a pointer to data. So, it's a good practice to name it as id itself.