Refactor Backend concept for data persistence

sdk/README.md

@@ -127,7 +127,7 @@ For further examples and tutorials, check out the `basyx.aas.examples`-package.
 * [`tutorial_storage`](./basyx/aas/examples/tutorial_storage.py): Manage a larger number of Asset Administration Shells in an ObjectStore and resolve references
 * [`tutorial_serialization_deserialization`](./basyx/aas/examples/tutorial_serialization_deserialization.py): Use the JSON and XML serialization/deserialization for single objects or full standard-compliant files
 * [`tutorial_aasx`](./basyx/aas/examples/tutorial_aasx.py): Export Asset Administration Shells with related objects and auxiliary files to AASX package files
-* [`tutorial_backend_couchdb`](./basyx/aas/examples/tutorial_backend_couchdb.py): Use the *Backends* interface (`update()/commit()` methods) to manage and retrieve AAS objects in a CouchDB document database
+* [`tutorial_backend_couchdb`](./basyx/aas/examples/tutorial_backend_couchdb.py): Use the *CouchDBObjectStore* to manage and retrieve AAS objects in a CouchDB document database
 
 
 ### Documentation

sdk/basyx/aas/backend/__init__.py

@@ -1,7 +1,3 @@
 """
-This module implements a standardized way of integrating data from existing systems into AAS objects. To achieve this,
-the abstract :class:`~basyx.aas.backend.backends.Backend` class implements the class methods
-:meth:`~basyx.aas.backend.backends.Backend.update_object` and :meth:`~basyx.aas.backend.backends.Backend.commit_object`,
-which every implementation of a backend needs to overwrite. For a tutorial on how to implement a backend, see
-:ref:`this tutorial <tutorial_backend_couchdb>`
+This module implements a standardized way of persisting AAS objects using various backends.
 """