{
    "properties" : {
        "emp_no" : {
            "type" : "long"
        },
        "first_name" : {
            "type" : "text"
        },
        "gender" : {
            "type" : "text"
        },
        "languages" : {
            "type" : "byte"
        },
        "last_name" : {
            "type" : "text"
        },
        "salary" : {
            "type" : "integer"
        }
    }
}