Presso http://wiki.zope.org/ZODB/RelStorage
Q: Can I perform SQL queries on the data in the database? A: No. Like FileStorage <http://wiki.zope.org/ZODB/FileStorage> and DirectoryStorage <http://wiki.zope.org/ZODB/DirectoryStorage>, RelStorage<http://wiki.zope.org/ZODB/RelStorage>stores the data as pickles, making it hard for anything but ZODB to interpret the data. An earlier project called Ape attempted to store data in a truly relational way, but it turned out that Ape worked too much against ZODB principles and therefore could not be made reliable enough for production use. RelStorage <http://wiki.zope.org/ZODB/RelStorage>, on the other hand, is much closer to an ordinary ZODB storage, and is therefore much safer for production use. Questo e' chiaro: si usa postgres per lo storage pickles, ma solo ZODB lo capisce; un agente esterno che non conosce nulla di ZODB probabilmente legge garbage. Ma piu' sotto , verso la fine, si parla di CouchDB e la risposta mi sembra del tipo "si puo' fare anche in plone" : So, once ZODB objects (pickles) are stored as native PostgreSQL<http://wiki.zope.org/ZODB/PostgreSQL>data types, indexing is already there, in several forms, ready for access via PostgreSQL <http://wiki.zope.org/ZODB/PostgreSQL>'s native SQL API. That, plus PostgreSQL <http://wiki.zope.org/ZODB/PostgreSQL>'s native array data type, is an invitation to reveal what true Object Publishing is all about. Add PostgreSQL <http://wiki.zope.org/ZODB/PostgreSQL>'s clustering / replication, and CouchDB?<http://wiki.zope.org/ZODB/RelStorage/createform?page=CouchDB>has somewhat less to offer as a "unique" solution. just another $.02 Jerry S. con riferimento implicito http://blog.melhase.net/articles/2006/06/06/a-tale-of-postgresql-types-and-python Qualcuno ha esperienza su RelStorage ? -- luigi
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