div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: data model is actually widely implemented in existing database systems and probably has a good future it seems worthwhile to propose 30 a mapping between the relational data model src=https:reader033vdocumentsusreader033viewer20220420105e71f11354667344c1525d45html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: data model is actually widely implemented in existing database systems and probably has a good future it seems worthwhile to propose 30 a mapping between the relational data model src=https:reader033vdocumentsusreader033viewer20220420105e71f11354667344c1525d45html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: data model is actually widely implemented in existing database systems and probably has a good future it seems worthwhile to propose 30 a mapping between the relational data model src=https:reader033vdocumentsusreader033viewer20220420105e71f11354667344c1525d45html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: data model is actually widely implemented in existing database systems and probably has a good future it seems worthwhile to propose 30 a mapping between the relational data model src=https:reader033vdocumentsusreader033viewer20220420105e71f11354667344c1525d45html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: data model is actually widely implemented in existing database systems and probably has a good future it seems worthwhile to propose 30 a mapping between the relational data model src=https:reader033vdocumentsusreader033viewer20220420105e71f11354667344c1525d45html5thumbnails5jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 6button div class=ts-image amp-img class=ts-thumb alt=Page 6: data model is actually widely implemented in existing database systems and probably has a good future it seems worthwhile to propose 30 a mapping between the relational data model src=https:reader033vdocumentsusreader033viewer20220420105e71f11354667344c1525d45html5thumbnails6jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 7button div class=ts-image amp-img class=ts-thumb alt=Page 7: data model is actually widely implemented in existing database systems and probably has a good future it seems worthwhile to propose 30 a mapping between the relational data model src=https:reader033vdocumentsusreader033viewer20220420105e71f11354667344c1525d45html5thumbnails7jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 8button div class=ts-image amp-img class=ts-thumb alt=Page 8: data model is actually widely implemented in existing database systems and probably has a good future it seems worthwhile to propose 30 a mapping between the relational data model src=https:reader033vdocumentsusreader033viewer20220420105e71f11354667344c1525d45html5thumbnails8jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 9button div class=ts-image amp-img class=ts-thumb alt=Page 9: data model is actually widely implemented in existing database systems and probably has a good future it seems worthwhile to propose 30 a mapping between the relational data model src=https:reader033vdocumentsusreader033viewer20220420105e71f11354667344c1525d45html5thumbnails9jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 10button div class=ts-image amp-img class=ts-thumb alt=Page 10: data model is actually widely implemented in existing database systems and probably has a good future it seems worthwhile to propose 30 a mapping between the relational data model src=https:reader033vdocumentsusreader033viewer20220420105e71f11354667344c1525d45html5thumbnails10jpg width=142 height=106 layout=responsive amp-img divdiv