Compiled are volumes containing molecular constants, density, surface tension, dielectric constants, refractive index, vapor pressure, phase transition temperatures and transition enthalpies. This data was assembled, analysed and matched with each other to yield a unique list of individual compounds. Furthermore, about 17000 structure drawings had to be prepared for all compounds including the exact stereo information. All this data assembly has been performed with the new, object-oriented database technology SciDex. Up to now, many users prefer printed books to electronical media.
Books can show a large amount of information in high printing quality with one single glance.
They are documents which survive all changes of computer systems and operating systems. Of course, the electronical version gives more functionality to the data, e.g. substructure search and structure comparison methods. Scientific data are not only numbers and words, but also rules, principles and complex data like molecular structures, spectra and reaction conditions, which have multiple relations between each other. Scientific information with the purpose of documentation can be handled with conventional relational databases. Objects' are scientific data connected with scientific rules and the relations to other data.