Added missing documentation

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Added LICENSE

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Add test case for 'column_definition' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Add test case for 'relational_properties' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Add test case for 'deferred_segment_creation' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Removed unnecessary import

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Add test case for 'mapping_table_clause' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Add test case for 'index_org_overflow_clause' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Add test case for 'index_org_table_clause' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Add test case for 'table_compression' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>