  In this survey article we propose the notion of a bound quiver for an exact
category generalising the classical concept of the Gabriel quiver and its
relation for a module category as certain ring extension. The notion is
motivated by joint work of the author with Vanessa Miemietz, Steffen Koenig and
Sergiy Ovsienko in the case where the exact category is the category of modules
with a standard filtration for a quasi-hereditary algebra. We conclude with a
variety of examples in this case.
