is returned to the front-end status code, is the front-end status code given according to the judgment of the back-end itself? Is there still some official way? For beginners to learn the back end, please let me know

async selectData(ctx) {
       let data = ctx.request.body
        let userAddParams = [data.oid,data.uid,data.name,data.buytime];
        if(Object.keys(data).length > 0) {
            try {
                await query(insert, userAddParams);
                ctx.response.body = {
                  status: 200,
                  description: "ok",
                  result: data
                }
              } catch(err) {
                    ctx.response.body = {
                        status: 404
                    }
              }
          }
      }