JSON Textual representation widely used for data exchange Example of JSON data "ID":"22222", "name": "firstname:"Albert", "lastname:"Einstein" }, "deptname":"Physics", "children": {"firstname":"Hans","lastname":"Einstein"}, {"firstname":"Eduard","lastname":"Einstein"} ] } Types:integer,real,string,and Objects:are key-value maps,i.e.sets of (attribute name,value)pairs Arrays are also key-value maps(from offset to value) Database System Concepts-7th Edition 8.7 ©Silberschat乜，Korth and SudarshanDatabase System Concepts - 7 8.7 ©Silberschatz, Korth and Sudarshan th Edition JSON ▪ Textual representation widely used for data exchange ▪ Example of JSON data { "ID": "22222", "name": { "firstname: "Albert", "lastname: "Einstein" }, "deptname": "Physics", "children": [ {"firstname": "Hans", "lastname": "Einstein" }, {"firstname": "Eduard", "lastname": "Einstein" } ] } ▪ Types: integer, real, string, and • Objects: are key-value maps, i.e. sets of (attribute name, value) pairs • Arrays are also key-value maps (from offset to value)