{"product_id":"9783639068542","title":"Typing Polymorphic Relational Operators","description":"The overarching goal of the current book is to pave the road towards a comprehensive solution to the decades old problem of integrating databases and programming languages. For this purpose, we propose a record calculus as an extension of an ML-style functional programming language core that is powerful enough to allow type inference for user-defined polymorphic relational operators. The type system described in the book allows the definition and typing of standard relational operators like join, project, divide, restrict, and others in a flexible, polymorphic way.","brand":"VDM Verlag Dr. Mueller E.K.","offers":[{"title":"Default Title","offer_id":47055288467696,"sku":"9783639068542","price":64.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9783639068542_p0.jpg?v=1763727751","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9783639068542","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}