Figure 1
From: UniChem: extension of InChI-based compound mapping to salt, connectivity and stereochemistry layers
Modifications to the UniChem schema required to implement connectivity search. The UniChem schema (described previously [1]) was modified by the addition of the UC_FIKHB_HIERARCHY table and the FIKHB field within the UC_STRUCTURES table. Both additions are highlighted with bold and shading. Full details of the function of these additions are given in the text. For clarity, not all fields are shown. Primary/foreign key constraints are indicated by solid arrows. PK = Primary Key, FK = Foreign Key.