For a more in-depth review of the why and how of the database, see our paper Comprehensive Approach to QSAR
The structure of a dataset is best learned through an example. Look at this one by A.Debnath and C.Hansch. The first portion contains descriptive text. The second portion lists the parameters and substituents present.
The commercial version of this database (available for VAX/VMS computers) also contains the complete set of dependent and independent parameter values, and structural information for each compound (SMILES). Many of the equations have been improved, by C.Hansch, from the one given in the original reference.
The QSAR database consists of over 16,500 datasets. To facilitate browsing, and to provide more focused searching, the database is divided into sub-sections, as shown below. To restrict your searching to a particular section, or just browse the archive files directly, follow the Directory links below the search form.
bio pre-octanol 1901 1905 ... etc ... 1961 octanol-era 1962 1963 ... etc ... 1999 2000 2001 phys pre-octanol 1901 1905 ... etc ... 1961 octanol-era 1962 1963 ... etc ... 1999 2000 2001