Standard Library (5 of 5). LibrettoDB and Databases

Relational databases are interpreted in Libretto as object models, and queries to databases are interpreted as Libretto expressions. The access to a database is organized in two steps:

1. The development of an object model for the database universe of discourse.
2. The construction of mapping from this object model to the database.

The technology implemented in Libretto has a theoretical background published in Databases as Ontologies. Due to this method, queries to a database can be represented as regular Libretto expressions.