update RealEstates model, add DB helper functions for RealEstates model

app/models/realEstate.js

@@ -12,13 +12,15 @@ module.exports = (sequelize, DataTypes) => {
       type: DataTypes.TEXT,
       allowNull: false
     },
-    agencyObjectId: {
-      type: DataTypes.TEXT,
-      allowNull: false
-    },
     originAgencyName: {
       type: DataTypes.TEXT,
-      allowNull: false
+      allowNull: false,
+      unique: true
+    },
+    agencyObjectId: {
+      type: DataTypes.TEXT,
+      allowNull: false,
+      unique: true
     },
     realEstateType: {
       type: DataTypes.TEXT,
@@ -45,14 +47,10 @@ module.exports = (sequelize, DataTypes) => {
       type: DataTypes.DATE,
       allowNull: false
     },
-    deleted: {
-      type: DataTypes.BOOLEAN,
-      allowNull: false
-    },
-    sold: {
-      type: DataTypes.BOOLEAN,
-      allowNull: false
-    }
+    title: DataTypes.TEXT,
+    shortDescription: DataTypes.TEXT,
+    longDescription: DataTypes.TEXT,
+    adStatus: DataTypes.INTEGER
   });
 
   RealEstate.associate = models => {