public MsSqlProvider(string s)
     : base(s)
 {
     problemManager    = new MsSqlProblemManager(s);
     submissionManager = new MsSqlSubmissionManager(s);
     contestManager    = new MsSqlContestManager(s);
     messageManager    = new MsSqlMessageManager(s);
     userManager       = new MsSqlUserManager(s);
     languageManager   = new MsSqlLanguageManager(s);
     testManager       = new MsSqlTestManager(s);
 }
 public MsSqlProvider(string s)
     : base(s)
 {
     _pm = new MsSqlProblemManager(s);
     _sm = new MsSqlSubmissionManager(s);
     _cm = new MsSqlContestManager(s);
     _mm = new MsSqlMessageManager(s);
     _um = new MsSqlUserManager(s);
     _lm = new MsSqlLanguageManager(s);
     _tm = new MsSqlTestManager(s);
 }