Analisis dampak keberadaan ritel modern terhadap kinerja ritel tradisional tahun 2015 dalam kebijakan zonasi ritel peraturan daerah DKI Jakarta nomor 2 tahun 2002: studi kasus ritel tradisional PD Pasar Jaya di DKI Jakarta = Analysis the impact of modern retail coexistence with traditional retail on traditional retail's performance in the context of retail zoning policy Jakarta regional regulation No. 2 2002: case study of DKI Jakarta PD Pasar Jaya Traditional retail in 2015