Simple RDBMS Query Tool
Author: Or Khiyaev

About:
The Simple RDBMS Query Tool reads csv files and converts them into a relational schema.

How to Run in Terminal:
$ javac ssql.java
$ java ssql

Then you should see:

***** A simple RDBMS query tool*****
type quit at prompt to exit the program

To Open file

ssql init filename.csv

Example:

ssql init table1.csv

To use SELECTION:

ssql SELECTION relationName, attributeName, Operator, constant.

Example:

ssql SELECTION table1,A,<,2

To use PROJECTION:

ssql PROJECTION relationName, [attr1, attr2, ….. attr(i)]

Example:

ssql PROJECTION table1,A

To use JOIN:

ssql JOIN relationName1, relationName2, ON relation1.attr, relation2.attr

Example:

ssql JOIN table1,table2 ON table1.A,table2.B