uml - Understanding why the extends arrow points in the opposite direction - Stack Overflow

In class diagrams I typically see something like ClassA extends ClassB where the arrow head points to ClassA. Example, here. This has always confused me. Why is the arrow head not pointing to ClassB?

Lucene GraphDB connector — GraphDB Free 9.11.0 documentation

2.5.13 Database Design Techniques and Deliverables

Designing the Initial Graph Data Model - Graph Data Modeling for Neo4j

PDF) Exploring Complexity in Software Systems - From an irrational model of software evolution to a theory of psychological complexity and cognitive limitations based on empirical evidence

Planet SIPB

my kingdom for a smile :-): UML Class Diagram Relationships, Aggregation, Composition

Smalltalk Solutions 2008 Report, ESUG 2008 report, VAS report

Programming Concepts Manual, Volume II — VMS Software, Inc.

UML Class Diagram Arrows overlap when we add new nodes to existing diagram - GoJS - Northwoods Software

OOAD - Quick Guide