DOC: document further ideas on how to design the Python client in future

src/doc/future_caosdb.md

@@ -69,6 +69,11 @@ Analogue, to what Pandas does. Provide bracket notation
 `rec.properties["test"]` for Properties with names that are in conflict with 
 default attributes or contain spaces (or other forbidden characters).
 
+Entities can be initialized with a set of Propertynames. Those Propertynames will be used as 
+attributes such that tab completion is possible in interactive use. The value however will be a special
+value (e.g. UnsetPropertyValue) and accessing it results in an Exception. Thus, tab completion can be used 
+but no Properties are inserted unexpectedly with NULL values. 
+
 - Raise Exception if attribute does not exist but is accessed?
 
 [Discussion](https://gitlab.com/caosdb/caosdb-pylib/-/issues/60)
@@ -168,6 +173,14 @@ inserted = new_one.insert()
 print("The new record has the ID:", inserted.id)
 ```
 
+### Factory method
+While creating an Entity will not talk to a CaosDB server and can thus be done offline, the factory method
+`create_record` allows to 
+1. Retrieve the parent and set attributes according to inheritance
+2. Use a container to resolve the parent and set attributes
+
+In general, more complex "magic" will be placed in the factory and only the straight forward version 
+in the constructor.
 
 ### References and sub entities