It is also called a dative case..represented by <em>dat or d</em> ..it indicates that noun to whom something is given..like <em>she gave Jess a book..</em> here Jess is dat or prepositional case..
<span>Prepositional case is a grammatical case that marks the object of a preposition. This term can be used in languages where nouns have a declensional form that appears exclusively in combination with certain prepositions.</span>