Hello, people. I'm triing to find some information, which relates POSTGRES and PostgreSQL, for a class. I was looking in the documentation, and in the book beeing written ("PostgreSQL: Introduction and Concepts", by Bruce Momjian) but I could not find anything but instructions of the SQL sintax, some type definitions. Well, the documentation is excelent (and I'm using it for some projects of mine), but I need other kind of information. Let me try to make myself clearer: I need something like "In the POSTGRES design, the no-overwrite was used. In PostgreSQL we use..." I saw in the documentation o the developer's corner, that the WAL is going to be implemented in the 7.1 release. But what happened to the no-overwrite approach? Well, I hope you can help me. At least, pointing to some place/site where I can find this kind of information, TIA Ricardo.