This thesis is concerned with the description and analysis of two semantically different types of definite articles in German. While the existence of distinct article paradigms in various Germanic dialects and other languages has been acknowledged in the descriptive literature, the theoretical implications of their existence have not been explored extensively. I argue that each of the articles corresponds to one of the two predominant theoretical approaches to analyzing definite descriptions: the weak article encodes uniqueness. The strong article is anaphoric in nature. In the course of spelling out analyses for the two articles, more general issues relevant to current semantic theory are addressed, in particular with respect to situation semantic analyses of donkey sentences and domain restriction.