aopem / lite-db-engine

Simple database engine written in C++.

lite-db-engine

A simple database engine written in C++.

Features

Relational Engine

Composed of:

• Lexer
• Parser
• Query Executor

A SQL statement is passed to a lexer, which creates a series of tokens. The tokens are then moved to the parser, which generates Abstract Syntax Tree (AST) nodes. Then, the Query Executor uses these AST nodes to interact with the Storage Engine and actually execute the database commands.

Storage Engine

** Currently in progress **

Dependencies

• CMake >= 3.25
• Boost >= 1.81

Usage

brew install boost
cd cmake
cmake .. && make
./main

Terminal Output Example

[lite-db-engine] SQL Terminal
-----------------------------
>> CREATE DATABASE newdb
[2023-04-09 15:38:03.885123] [0x00007ff85fa1a340] [info]    Cleaned SQL statement: 'CREATE DATABASE newdb'
[2023-04-09 15:38:03.885165] [0x00007ff85fa1a340] [info]    Parsing token type: KEYWORD_CREATE_DATABASE
[2023-04-09 15:38:03.885184] [0x00007ff85fa1a340] [info]    Executing CREATE DATABASE
>>