zake7749 / DBMS

Database management system

This is an exercise on implementing a small database management system which has an hashtable based on hash33.

Usage

SELECT (DISTINCT) {attrs} FROM {tables} WHERE {conditions}

Example

SELECT * FROM books;
SELECT DISTINCT author FROM books;
SELECT title FROM books,sellRecord WHERE isbn=isbn_no AND author='J. K. Rowling';

Data format

for sellRecord.txt
/* uid|no|isbn_no */
1|1|439139597

for books.txt
/* isbn|author|title|price|subject */
439139597|J. K. Rowling|Harry Potter and the goblet of fire|25.95|CHILDREN