qBeta has the following access modifier:
| Modifier | Pattern | Subpattern | Module | World |
| %public | Y | Y | Y | Y |
| %private | Y | N | N | N |
| %protected | Y | Y | N | N |
| %domain | Y | N | Y | N |
- Subpattern also covers singlar objects with the pattern as a superpattern.
- Pattern also covers singular object.
- Domain is the set of modules bound/delimited by the nearest enclosing module with the property
%domain_boundary– see below. - The first data column indicates whether the pattern itself has access to the member defined by the access level. As you can see, a pattern always has access to its own attributes.
- The second column indicates whether sub patterns of the pattern declared outside this Domain have access to the attribute.
- The third column indicates whether patterns in the same domain as the pattern have access to the attribute.
- The fourth column indicates whether all patterns have access to the attribute.