add basic components
remove main methods
Merge pull request #24 from medo/master

Restoring repo
Merge branch 'master' of https://github.com/MohamedBassem/sql-eldonya into structure
add structure of log manager
add factory of log manager
Merge pull request #1 from medo/structure

Structure
logging approach
Merge pull request #3 from medo/Log_manager

Log manager
Merge branch 'master' of https://github.com/medo/RDBMS-T2 into rami
Added interface and parser skeleton.