test for aggregates support
test if connection supports asynchronous execution
test for BLOBS (binary large objects) support
test for indexes support
test for tables inheritance support
not used
test for native multi-threading support
test for namespaces support
test for functions support
test for savepoints within transactions support
test if savepoints can be removed
test for sequences support
test for SQL language (even specific to the database) support
test for transactions support
test for triggers support
test for updatable cursors support
test for users support
test for views support
test for distributed transactions support
Used in gda_connection_supports_feature() and gda_server_provider_supports_feature() to test if a connection or a database provider supports some specific feature.