AQAL makes easy to access data on DBs without know SQL.
It implements Business Object/Manager pattern: Object maps table, builds SQL syntax, carries data; Manager performs queries, handles Objects (conveniently extended by Application Business Objects).
Bi-directional SQL <-> XML conversion and updating
Allows user to convert one or more database schemas to XML. Can also create and/or update existing database with schemas from XML. It will support multiple database platforms and abstractions.
lib4d_sql is a C library providing the required functions (connect, prepare, execute, ...) to write a SQL client for 4D databases. It uses the public 4D SQL protocol wich is supported by 4D products since... the version 11. It is already used by the PDO_