Simple DBMS

This project is a simple DBMS implemented using C, as the education material of the Introduction to Database Systems in National Chiao Tung University

Prerequisite

• make >= 4.1
• gcc >= 5.4.0
• g++ >= 5.4.0
• gtest >= 1.8.1
• python >= 3.6.0

Unit test

$ make check

System test

$ python3 test/system/system_test.py ./shell [test_case..]

if no test_cases is specified, it will run all system tests by default

Compile

$ make

Quick Start

$ ./shell

Query

The current table schema is hard coded, the schema in the include/User.h, you can check the User_t to get the detail of each field.

Table schema

User table

field_name	data_type
id	int
name	char[255]
email	char[255]
age	int

Supported command

Command	Description
insert	The insert command only allow insert one User_t record at a time
select	The select command will only print out all the User_t records in the current databases

Storage mode

Memory only

The memory only will not store any record after the process terminate

Usage:

$ ./shell

File mode

The File mode will store the record into the specify <DB file>, the next execute can automatically reload the record by the same execution command.

Usage:

$ ./shell <DB file>

Project Layout

├─ include/           Header files
├─ src/               Source files
│  ├─ shell.c         Entry point, which contains main()
│  └─ Util.c          Some utility functions
├─ test/              Unit tests & system tests
│  ├─ include/        Test header files
│  ├─ system/         System tests
│  └─ *.c             Unit tests source file
└─ Makefile           Makefile for make