Summary
- more portable SQL types;
- more portable: SQL standard syntax instead of MySQL extension;
- general SQL database support, for SQLite and PostgreSQL; tuned;
- updated;
- minimal support for PostgreSQL databases;
- elaborated examples for computations
- isabelle update_cartouches
- dedicated computation preprocessing rules for nat, int implemented by target language literals
- dropped superfluous preprocessing rule
- preprocessing rules must always stem from static context