diff --git a/README.md b/README.md
index 2b11555..02221aa 100644
--- a/README.md
+++ b/README.md
@@ -30,18 +30,19 @@ Usage: typeorm-model-generator -h <host> -d <database> -p [port] -u <user> -x
 Options:
   --help                 Show help                                     [boolean]
   --version              Show version number                           [boolean]
-  -h, --host             IP adress/Hostname for database server.      [required]
-  -d, --database         Database name.                               [required]
-  -u, --user             Username for database server.                [required]
-  -x, --pass             Password for database server.             [default: ""]
-  -p, --port             Port number for database server.
-  -e, --engine           Database engine.
+  -h, --host             IP adress/Hostname for database server
+                                                          [default: "127.0.0.1"]
+  -d, --database         Database name(or path for sqlite)            [required]
+  -u, --user             Username for database server
+  -x, --pass             Password for database server              [default: ""]
+  -p, --port             Port number for database server
+  -e, --engine           Database engine
           [choices: "mssql", "postgres", "mysql", "mariadb", "oracle", "sqlite"]
                                                               [default: "mssql"]
-  -o, --output           Where to place generated models.
+  -o, --output           Where to place generated models
                             [default: "Z:\Repos\typeorm-model-generator\output"]
   -s, --schema           Schema name to create model from. Only for mssql and
-                         postgres.
+                         postgres
   --ssl                                               [boolean] [default: false]
   --noConfig             Doesn't create tsconfig.json and ormconfig.json
                                                       [boolean] [default: false]
@@ -51,7 +52,9 @@ Options:
                           [choices: "pascal", "camel", "none"] [default: "none"]
   --cp, --case-property  Convert property names to specified case
                           [choices: "pascal", "camel", "none"] [default: "none"]
-  --lazy                 Generate lazy relations      [boolean] [default: false]  
+  --lazy                 Generate lazy relations      [boolean] [default: false]
+  --generateConstructor  Generate constructor allowing partial initialization
+                                                      [boolean] [default: false]
 ```
 ### Examples
 
@@ -73,3 +76,12 @@ Options:
       ```
       npx typeorm-model-generator -h localhost -d postgres -u postgres -x !Passw0rd -e postgres -o . -s public --ssl
       ````
+* Creating model from SQLite database
+   * Global module
+      ```
+      typeorm-model-generator -d "Z:\sqlite.db" -e sqlite -o .
+      ````
+   * Npx Way
+      ```
+      npx typeorm-model-generator -d "Z:\sqlite.db" -e sqlite -o .
+      ````
diff --git a/src/index.ts b/src/index.ts
index 8e79a44..967fd3f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -15,43 +15,42 @@ var argv = Yargs.usage(
 )
     .option("h", {
         alias: "host",
-        describe: "IP adress/Hostname for database server.",
-        demand: true
+        describe: "IP adress/Hostname for database server",
+        default: "127.0.0.1"
     })
     .option("d", {
         alias: "database",
-        describe: "Database name.",
+        describe: "Database name(or path for sqlite)",
         demand: true
     })
     .option("u", {
         alias: "user",
-        describe: "Username for database server.",
-        demand: true
+        describe: "Username for database server"
     })
     .option("x", {
         alias: "pass",
-        describe: "Password for database server.",
+        describe: "Password for database server",
         default: ""
     })
     .option("p", {
         alias: "port",
-        describe: "Port number for database server."
+        describe: "Port number for database server"
     })
     .option("e", {
         alias: "engine",
-        describe: "Database engine.",
+        describe: "Database engine",
         choices: ["mssql", "postgres", "mysql", "mariadb", "oracle", "sqlite"],
         default: "mssql"
     })
     .option("o", {
         alias: "output",
-        describe: "Where to place generated models.",
+        describe: "Where to place generated models",
         default: path.resolve(process.cwd(), "output")
     })
     .option("s", {
         alias: "schema",
         describe:
-            "Schema name to create model from. Only for mssql and postgres."
+            "Schema name to create model from. Only for mssql and postgres"
     })
     .option("ssl", {
         boolean: true,
@@ -91,31 +90,37 @@ var argv = Yargs.usage(
         default: false
     }).argv;
 
-var driver: AbstractDriver;
-var standardPort: number;
-var standardSchema: string = "";
+let driver: AbstractDriver;
+let standardPort: number;
+let standardSchema: string = "";
+let standardUser: string = "";
 switch (argv.e) {
     case "mssql":
         driver = new MssqlDriver();
         standardPort = 1433;
         standardSchema = "dbo";
+        standardUser = "sa";
         break;
     case "postgres":
         driver = new PostgresDriver();
         standardPort = 5432;
         standardSchema = "public";
+        standardUser = "postgres";
         break;
     case "mysql":
         driver = new MysqlDriver();
         standardPort = 3306;
+        standardUser = "root";
         break;
     case "mariadb":
         driver = new MysqlDriver();
         standardPort = 3306;
+        standardUser = "root";
         break;
     case "oracle":
         driver = new OracleDriver();
         standardPort = 1521;
+        standardUser = "SYS";
         break;
     case "sqlite":
         driver = new SqliteDriver();
@@ -130,7 +135,7 @@ let engine = new Engine(driver, {
     host: argv.h,
     port: parseInt(argv.p) || standardPort,
     databaseName: argv.d ? argv.d.toString() : null,
-    user: argv.u ? argv.u.toString() : null,
+    user: argv.u ? argv.u.toString() : standardUser,
     password: argv.x ? argv.x.toString() : null,
     databaseType: argv.e,
     resultsPath: argv.o ? argv.o.toString() : null,