SQLConnection[JDBC["Microsoft SQL Server(jTDS)", "localhost:1433/TestDatbase"],
"Catalog" -> Automatic, "Description" -> None, "Name" -> "DemoSql",
"Password" -> "test", "Properties" -> {}, "ReadOnly" -> False,
"RelativePath" -> False, "TransactionIsolationLevel" -> "ReadUncommitted",
"UseConnectionPool" -> False, "Username" -> "DemoLogin", "Version" -> 2.]

Sever Name: xxxx7ezff6.database.windows.net
User Name: xxxxxxxx
password: password
Database: AdventureWorks2012

SQLConnection[JDBC["Microsoft SQL Server(jTDS)",
"xxxx7ezff6.database.windows.net:1433/AdventureWorks2012"],
"Catalog" -> Automatic, "Description" -> None, "Name" -> "AdvTest",
"Password" -> "password", "Properties" -> {}, "ReadOnly" -> False,
"RelativePath" -> False, "TransactionIsolationLevel" -> "ReadUncommitted",
"UseConnectionPool" -> False, "Username" -> "xxxxxxxx", "Version" -> 2.]

conn = OpenSQLConnection[
  JDBC["Microsoft SQL Server(jTDS)", "ECSDBN-SRV-09/model"],
  "Username" -> "sa", "Password" -> "N3tC0nf1g"]

SQLConnection[1, "Open", "Catalog" -> "model",
 "TransactionIsolationLevel" -> "ReadCommitted"]

conn1 = OpenSQLConnection[
  JDBC["Microsoft SQL Server(jTDS)", "ECSDBN-SRV-09/master"],
  "Username" -> "sa", "Password" -> "N3tC0nf1g"]

SQLConnection[2, "Open", "Catalog" -> "master",
 "TransactionIsolationLevel" -> "ReadCommitted"]

(*Here I have not specified the database nane after the server name and it just seems to pick the one on the top of the database list.*)

conn2 = OpenSQLConnection[JDBC["Microsoft SQL Server(jTDS)", "ECSDBN-SRV-09"],
   "Username" -> "sa", "Password" -> "N3tC0nf1g"]

SQLConnection[3, "Open", "Catalog" -> "master",
 "TransactionIsolationLevel" -> "ReadCommitted"]

(*Look at the open connection to make sure.*)

SQLConnections[]

{SQLConnection[1, "Open", "Catalog" -> "model",
  "TransactionIsolationLevel" -> "ReadCommitted"],
 SQLConnection[2, "Open", "Catalog" -> "master",
  "TransactionIsolationLevel" -> "ReadCommitted"],
 SQLConnection[3, "Open", "Catalog" -> "master",
  "TransactionIsolationLevel" -> "ReadCommitted"]}

(*Check what tables exist through the current connection*)

SQLTables[conn]

{}

SQLTables[conn1]

{SQLTable["MSreplication_options", "TableType" -> "TABLE"],
 SQLTable["spt_fallback_db", "TableType" -> "TABLE"],
 SQLTable["spt_fallback_dev", "TableType" -> "TABLE"],
 SQLTable["spt_fallback_usg", "TableType" -> "TABLE"],
 SQLTable["spt_monitor", "TableType" -> "TABLE"],
 SQLTable["spt_values", "TableType" -> "TABLE"]}

SQLTables[conn2]

{SQLTable["MSreplication_options", "TableType" -> "TABLE"],
 SQLTable["spt_fallback_db", "TableType" -> "TABLE"],
 SQLTable["spt_fallback_dev", "TableType" -> "TABLE"],
 SQLTable["spt_fallback_usg", "TableType" -> "TABLE"],
 SQLTable["spt_monitor", "TableType" -> "TABLE"],
 SQLTable["spt_values", "TableType" -> "TABLE"]}

(*Check that I can access data from one of the tables in the connection using the SQL query approach*)

SQLExecute[conn1, "SELECT * FROM MSreplication_options",
  "GetAsStrings" -> True] // InputForm

{{"transactional", "1", "90", "0", "0", "0"}, {"merge", "1", "90", "0", "0", "0"}, {"security_model", "1", "90", "0", "0", "0"}}

(*Try another server*)

conn = OpenSQLConnection[
  JDBC["Microsoft SQL Server(jTDS)", "ECSDBN-SRV-04.enerserv.local"],
  "Username" -> "sa", "Password" -> "P@ssw0rd"]

JDBC::error: Network error IOException: Connection refused: connect >>

$Failed

Reference material: DatabaseLink/tutorial/Overview

conn=OpenSQLConnection[
   JDBC["Microsoft SQL Server(jTDS)", "185.50.123.132"],
   "Username" -> "myUser",
   "Password" -> "MyPass"
]

Use this code :

public class ConnectionClass {
    String ip = "192.168.0.131";
    String classs = "net.sourceforge.jtds.jdbc.Driver";
    String db = "Andro";
    String un = "sa";
    String password = "Admnsql";
    @SuppressLint("NewApi")
    public Connection CONN() {
    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
    .permitAll().build();
    StrictMode.setThreadPolicy(policy);
    Connection conn = null;
    String ConnURL = null;
    try {
    Class.forName(classs);
    ConnURL = "jdbc:jtds:sqlserver://" + ip + ";"
    + "databaseName=" + db + ";user=" + un + ";password="
    + password + ";";
    conn = DriverManager.getConnection(ConnURL);
    } catch (SQLException se) {
    Log.e("ERRO", se.getMessage());
    } catch (ClassNotFoundException e) {
    Log.e("ERRO", e.getMessage());
    } catch (Exception e) {
    Log.e("ERRO", e.getMessage());
    }
    return conn;
    }
}