ullmann

What's the Difference Between Subgraph Isomorphism and Subgraph Monomorphism?

In one of the projects I've worked on, the subject of isomorphism versus monomorphism came up. A little background: I'm no expert on graph theory and have no formal training in it. But this topic is very important in chemistry, where chemists expect a particular kind of subgraph matching to take place in the structure search systems the...

What is the relation between database books by Ullman et al.?

A First Course in Database Systems by Jeffrey D. Ullman, Jennifer Widom (Amazon links) Database System Implementation by Hector Garcia-Molina, Jeffrey D. Ullman, Jennifer D. Widom Database Systems: The Complete Book by Hector Garcia-Molina, Jeffrey D. Ullman, Jennifer Widom As far as I know the second one is the second "part" of the f...