Part I Ionic Liquids Database.- Ionic Liquids Database.- Introduction.- Properties of Multi-Systems Containing Ionic Liquids.- The Usage of Database.- Part II Properties of Multi-Systems Containing Ionic Liquids.- Systems Containing Imidazolium Ionic Liquids.- Systems Containing 1-Alkyl Imidazolium Ionic Liquids.- Systems Containing 1,3-Dialkyl Imidazolium Ionic Liquids.- Systems Containing Tri-Alkyl Imidazolium Ionic Liquids.- Systems Containing Pyrrolidinium Ionic Liquids.- Systems Containing Piperidinium Ionic Liquids.- Systems Containing Pyridinium Ionic Liquids.- Systems Containing Isoquinolinium Ionic Liquids.- Systems Containing Ammonium Ionic Liquids.- Systems Containing Phosphonium Ionic Liquids.