diff --git a/src/data/datatypes.js b/src/data/datatypes.js
index 47e1702..98fce8e 100644
--- a/src/data/datatypes.js
+++ b/src/data/datatypes.js
@@ -265,7 +265,7 @@ const defaultTypesBase = {
 };
 
 export const defaultTypes = new Proxy(defaultTypesBase, {
-  get: (target, prop) => (prop in target ? target[prop] : {}),
+  get: (target, prop) => (prop in target ? target[prop] : false),
 });
 
 const mysqlTypesBase = {
@@ -684,7 +684,7 @@ const mysqlTypesBase = {
 };
 
 export const mysqlTypes = new Proxy(mysqlTypesBase, {
-  get: (target, prop) => (prop in target ? target[prop] : {}),
+  get: (target, prop) => (prop in target ? target[prop] : false),
 });
 
 const postgresTypesBase = {
@@ -1099,7 +1099,7 @@ const postgresTypesBase = {
 };
 
 export const postgresTypes = new Proxy(postgresTypesBase, {
-  get: (target, prop) => (prop in target ? target[prop] : {}),
+  get: (target, prop) => (prop in target ? target[prop] : false),
 });
 
 const sqliteTypesBase = {
@@ -1235,7 +1235,7 @@ const sqliteTypesBase = {
 };
 
 export const sqliteTypes = new Proxy(sqliteTypesBase, {
-  get: (target, prop) => (prop in target ? target[prop] : {}),
+  get: (target, prop) => (prop in target ? target[prop] : false),
 });
 
 const mssqlTypesBase = {
@@ -1275,7 +1275,7 @@ const mssqlTypesBase = {
 };
 
 export const mssqlTypes = new Proxy(mssqlTypesBase, {
-  get: (target, prop) => (prop in target ? target[prop] : {}),
+  get: (target, prop) => (prop in target ? target[prop] : false),
 });
 
 const dbToTypesBase = {
@@ -1288,5 +1288,5 @@ const dbToTypesBase = {
 };
 
 export const dbToTypes = new Proxy(dbToTypesBase, {
-  get: (target, prop) => (prop in target ? target[prop] : {}),
+  get: (target, prop) => (prop in target ? target[prop] : false),
 });
diff --git a/src/utils/importSQL/postgres.js b/src/utils/importSQL/postgres.js
index 1b2f16a..84b0f80 100644
--- a/src/utils/importSQL/postgres.js
+++ b/src/utils/importSQL/postgres.js
@@ -34,8 +34,8 @@ export function fromPostgres(ast, diagramDb = DB.GENERIC) {
         table.indices = [];
         table.id = tables.length;
         e.create_definitions.forEach((d) => {
+          const field = {};
           if (d.resource === "column") {
-            const field = {};
             field.name = d.column.column.expr.value;
 
             let type = d.definition.dataType;
@@ -154,6 +154,59 @@ export function fromPostgres(ast, diagramDb = DB.GENERIC) {
               relationships.push(relationship);
             }
           }
+
+          if (d.reference_definition) {
+            console.log(d);
+            const relationship = {};
+            const startTable = table.name;
+            const startField = field.name;
+            const endTable = d.reference_definition.table[0].table;
+            const endField =
+              d.reference_definition.definition[0].column.expr.value;
+            let updateConstraint = "No action";
+            let deleteConstraint = "No action";
+            d.reference_definition.on_action.forEach((c) => {
+              if (c.type === "on update") {
+                updateConstraint = c.value.value;
+                updateConstraint =
+                  updateConstraint[0].toUpperCase() +
+                  updateConstraint.substring(1);
+              } else if (c.type === "on delete") {
+                deleteConstraint = c.value.value;
+                deleteConstraint =
+                  deleteConstraint[0].toUpperCase() +
+                  deleteConstraint.substring(1);
+              }
+            });
+
+            const startTableId = tables.length;
+
+            const endTableId = tables.findIndex((t) => t.name === endTable);
+            if (endTableId === -1) return;
+
+            const endFieldId = tables[endTableId].fields.findIndex(
+              (f) => f.name === endField,
+            );
+            if (endField === -1) return;
+
+            const startFieldId = table.fields.findIndex(
+              (f) => f.name === startField,
+            );
+            if (startFieldId === -1) return;
+
+            relationship.name = startTable + "_" + startField + "_fk";
+            relationship.startTableId = startTableId;
+            relationship.startFieldId = startFieldId;
+            relationship.endTableId = endTableId;
+            relationship.endFieldId = endFieldId;
+            relationship.updateConstraint = updateConstraint;
+            relationship.deleteConstraint = deleteConstraint;
+            relationship.cardinality = Cardinality.ONE_TO_ONE;
+            relationships.push(relationship);
+
+            relationships.forEach((r, i) => (r.id = i));
+            console.log(relationship);
+          }
         });
         table.fields.forEach((f, j) => {
           f.id = j;