diff --git a/ChangeLog b/ChangeLog
index 32939483..a7706039 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -16920,3 +16920,27 @@
 2018-05-29 Fred Gleason <fredg@paravelsystems.com>
 	* Fixed a regression that caused meters to fail when rdvairplayd(8)
 	was operated with invalid channel assignments.
+2018-05-29 Fred Gleason <fredg@paravelsystems.com>
+	* Dropped the 'RDAIRPLAY.INSTANCE' field from the database.
+	* Dropped the 'RDAIRPLAY.CARD<n>' fields from the database.
+	* Dropped the 'RDAIRPLAY.PORT<n>' fields from the database.
+	* Dropped the 'RDAIRPLAY.START_RML<n>' fields from the database.
+	* Dropped the 'RDAIRPLAY.STOP_RML<n>' fields from the database.
+	* Dropped the 'RDAIRPLAY.OP_MODE' field from the database.
+	* Dropped the 'RDAIRPLAY.START_MODE' field from the database.
+	* Dropped the 'RDPANEL.INSTANCE' field from the database.
+	* Dropped the 'RDPANEL.CARD<n>' fields from the database.
+	* Dropped the 'RDPANEL.PORT<n>' fields from the database.
+	* Dropped the 'RDPANEL.START_RML<n>' fields from the database.
+	* Dropped the 'RDPANEL.STOP_RML<n>' fields from the database.
+	* Altered the default value of the 'MATRICES.PORT field to 0.
+	* Altered the default value of the 'MATRICES.PORT_2 field to 0.
+	* Altered the default value of the 'MATRICES.INPUTS field to 0.
+	* Altered the default value of the 'MATRICES.OUTPUTS field to 0.
+	* Altered the default value of the 'MATRICES.GPIS field to 0.
+	* Altered the default value of the 'MATRICES.GPOS field to 0.
+	* Incremented the database version to 284.
+	* Fixed bugs in rdcatch(1) that incorrectly escaped host
+	names in SQL calls.
+	* Fixed a bug in 'RDLog::create()' that failed to initialize
+	the modified datetime correctly.
diff --git a/docs/tables/rd_airplay.txt b/docs/tables/rd_airplay.txt
index 82cc8578..2979c344 100644
--- a/docs/tables/rd_airplay.txt
+++ b/docs/tables/rd_airplay.txt
@@ -6,11 +6,8 @@ Following is the layout of a record in the RDAIRPLAY table:
 FIELD NAME           TYPE              REMARKS
 ------------------------------------------------------------------------------
 ID                     int(10) unsigned  * Primary key, Auto Increment
-STATION                char(40)          Workstation, Indexed
 SEGUE_LENGTH           int(11)
 TRANS_LENGTH           int(11)
-OP_MODE                int(11)           *** RETIRED @ DB v233 ***
-START_MODE             int(11)           *** RETIRED @ DB v233 ***
 LOG_MODE_STYLE         int(11)           0=Unified, 1=Independent
 PIE_COUNT_LENGTH       int(11)
 PIE_COUNT_ENDPOINT     int(11)           0=EOF, 1=Segue Point
diff --git a/lib/dbversion.h b/lib/dbversion.h
index e3bba700..b1360460 100644
--- a/lib/dbversion.h
+++ b/lib/dbversion.h
@@ -24,7 +24,7 @@
 /*
  * Current Database Version
  */
-#define RD_VERSION_DATABASE 283
+#define RD_VERSION_DATABASE 284
 
 
 #endif  // DBVERSION_H
diff --git a/lib/rdlog.cpp b/lib/rdlog.cpp
index 756f0ba1..80ab1d0f 100644
--- a/lib/rdlog.cpp
+++ b/lib/rdlog.cpp
@@ -520,6 +520,7 @@ bool RDLog::create(const QString &name,const QString &svc_name,
     "DESCRIPTION=\""+RDEscapeString(name)+" log \","+
     "ORIGIN_USER=\""+RDEscapeString(user_name)+"\","+
     "ORIGIN_DATETIME=now(),"+
+    "MODIFIED_DATETIME=now(),"+
     "LINK_DATETIME=now(),"+
     "SERVICE=\""+RDEscapeString(svc_name)+"\"";
   if(shelflife>=0) {
diff --git a/rdadmin/createdb.cpp b/rdadmin/createdb.cpp
index 0605c5d9..3d722e37 100644
--- a/rdadmin/createdb.cpp
+++ b/rdadmin/createdb.cpp
@@ -991,50 +991,8 @@ bool CreateDb(QString name,QString pwd,RDConfig *config)
   sql=QString("create table if not exists RDAIRPLAY (")+
     "ID int not null primary key auto_increment,"+
     "STATION char(40) not null,"+
-    "CARD0 int default 0,"+
-    "PORT0 int default 0,"+
-    "START_RML0 char(255),"+
-    "STOP_RML0 char(255),"+
-    "CARD1 int default 0,"+
-    "PORT1 int default 0,"+
-    "START_RML1 char(255),"+
-    "STOP_RML1 char(255),"+
-    "CARD2 int default 0,"+
-    "PORT2 int default 0,"+
-    "START_RML2 char(255),"+
-    "STOP_RML2 char(255),"+
-    "CARD3 int default 0,"+
-    "PORT3 int default 0,"+
-    "START_RML3 char(255),"+
-    "STOP_RML3 char(255),"+
-    "CARD4 int default 0,"+
-    "PORT4 int default 0,"+
-    "START_RML4 char(255),"+
-    "STOP_RML4 char(255),"+
-    "CARD5 int default 0,"+
-    "PORT5 int default 0,"+
-    "START_RML5 char(255),"+
-    "STOP_RML5 char(255),"+
-    "CARD6 int default 0,"+
-    "PORT6 int default 0,"+
-    "START_RML6 char(255),"+
-    "STOP_RML6 char(255),"+
-    "CARD7 int default 0,"+
-    "PORT7 int default 0,"+
-    "START_RML7 char(255),"+
-    "STOP_RML7 char(255),"+
-    "CARD8 int default 0,"+
-    "PORT8 int default 0,"+
-    "START_RML8 char(255),"+
-    "STOP_RML8 char(255),"+
-    "CARD9 int default 0,"+
-    "PORT9 int default 0,"+
-    "START_RML9 char(255),"+
-    "STOP_RML9 char(255),"+
     "SEGUE_LENGTH int default 250,"+
     "TRANS_LENGTH int default 50,"+
-    "OP_MODE int default 2,"+
-    "START_MODE int default 0,"+
     "LOG_MODE_STYLE int default 0,"+
     "PIE_COUNT_LENGTH int default 15000,"+
     "PIE_COUNT_ENDPOINT int default 0,"+
@@ -1102,8 +1060,8 @@ bool CreateDb(QString name,QString pwd,RDConfig *config)
     "PORT_TYPE int default 0,"+
     "PORT_TYPE_2 int default 0,"+
     "CARD int default -1,"+
-    "PORT int not null,"+
-    "PORT_2 int not null,"+
+    "PORT int not null default 0,"+
+    "PORT_2 int not null default 0,"+
     "IP_ADDRESS char(16),"+
     "IP_ADDRESS_2 char(16),"+
     "IP_PORT int,"+
@@ -1117,10 +1075,10 @@ bool CreateDb(QString name,QString pwd,RDConfig *config)
     "START_CART_2 int unsigned,"+
     "STOP_CART_2 int unsigned,"+
     "GPIO_DEVICE char(255),"+
-    "INPUTS int not null,"+
-    "OUTPUTS int not null,"+
-    "GPIS int not null,"+
-    "GPOS int not null,"+
+    "INPUTS int not null default 0,"+
+    "OUTPUTS int not null default 0,"+
+    "GPIS int not null default 0,"+
+    "GPOS int not null default 0,"+
     "FADERS int default 0,"+
     "DISPLAYS int default 0,"+
     "index MATRIX_IDX (STATION_NAME,MATRIX))"+
@@ -1509,31 +1467,6 @@ bool CreateDb(QString name,QString pwd,RDConfig *config)
   sql=QString("create table if not exists RDPANEL (")+
     "ID int not null primary key auto_increment,"+
     "STATION char(40) not null,"+
-    "INSTANCE int unsigned not null,"+
-    "CARD2 int default 0,"+
-    "PORT2 int default 0,"+
-    "START_RML2 char(255),"+
-    "STOP_RML2 char(255),"+
-    "CARD3 int default 0,"+
-    "PORT3 int default 0,"+
-    "START_RML3 char(255),"+
-    "STOP_RML3 char(255),"+
-    "CARD6 int default 0,"+
-    "PORT6 int default 0,"+
-    "START_RML6 char(255),"+
-    "STOP_RML6 char(255),"+
-    "CARD7 int default 0,"+
-    "PORT7 int default 0,"+
-    "START_RML7 char(255),"+
-    "STOP_RML7 char(255),"+
-    "CARD8 int default 0,"+
-    "PORT8 int default 0,"+
-    "START_RML8 char(255),"+
-    "STOP_RML8 char(255),"+
-    "CARD9 int default 0,"+
-    "PORT9 int default 0,"+
-    "START_RML9 char(255),"+
-    "STOP_RML9 char(255),"+
     "STATION_PANELS int default 3,"+
     "USER_PANELS int default 3,"+
     "CLEAR_FILTER enum('N','Y') default 'N',"+
@@ -8397,6 +8330,122 @@ int UpdateDb(int ver,RDConfig *config)
     delete q;
   }
 
+  if(ver<284) {
+    sql=QString("alter table RDAIRPLAY drop column INSTANCE");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    for(int i=0;i<10;i++) {
+      sql=QString("alter table RDAIRPLAY ")+
+	QString().sprintf("drop column CARD%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+
+      sql=QString("alter table RDAIRPLAY ")+
+	QString().sprintf("drop column PORT%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+
+      sql=QString("alter table RDAIRPLAY ")+
+	QString().sprintf("drop column START_RML%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+
+      sql=QString("alter table RDAIRPLAY ")+
+	QString().sprintf("drop column STOP_RML%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+    }
+
+    sql=QString("alter table RDAIRPLAY drop column OP_MODE");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table RDAIRPLAY drop column START_MODE");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+
+    sql=QString("alter table RDPANEL drop column INSTANCE");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    for(int i=2;i<4;i++) {
+      sql=QString("alter table RDPANEL ")+
+	QString().sprintf("drop column CARD%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+
+      sql=QString("alter table RDPANEL ")+
+	QString().sprintf("drop column PORT%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+
+      sql=QString("alter table RDPANEL ")+
+	QString().sprintf("drop column START_RML%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+
+      sql=QString("alter table RDPANEL ")+
+	QString().sprintf("drop column STOP_RML%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+    }
+
+    for(int i=6;i<10;i++) {
+      sql=QString("alter table RDPANEL ")+
+	QString().sprintf("drop column CARD%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+
+      sql=QString("alter table RDPANEL ")+
+	QString().sprintf("drop column PORT%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+
+      sql=QString("alter table RDPANEL ")+
+	QString().sprintf("drop column START_RML%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+
+      sql=QString("alter table RDPANEL ")+
+	QString().sprintf("drop column STOP_RML%d",i);
+      q=new RDSqlQuery(sql,false);
+      delete q;
+    }
+
+    sql=QString("alter table MATRICES alter column PORT set default 0");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table MATRICES alter column PORT_2 set default 0");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table MATRICES alter column INPUTS set default 0");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table MATRICES alter column OUTPUTS set default 0");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table MATRICES alter column GPIS set default 0");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table MATRICES alter column GPOS set default 0");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table REPLICATORS alter column TYPE_ID set default 0");
+    q=new RDSqlQuery(sql,false);
+    delete q;
+  }
+
+
+
+
 
 
   //
diff --git a/rdcatch/rdcatch.cpp b/rdcatch/rdcatch.cpp
index 7e9b5c39..65a962e5 100644
--- a/rdcatch/rdcatch.cpp
+++ b/rdcatch/rdcatch.cpp
@@ -48,6 +48,7 @@
 #include <rddb.h>
 #include <rddeck.h>
 #include <rdedit_audio.h>
+#include <rdescape_string.h>
 #include <rdmixer.h>
 #include <rdripc.h>
 #include <rdsettings.h>
@@ -291,9 +292,13 @@ MainWidget::MainWidget(QWidget *parent)
     catch_connect.back()->connector()->
       connectHost(q->value(1).toString(),RDCATCHD_TCP_PORT,
 		  rda->config()->password());
-    sql=QString().sprintf("select CHANNEL,MON_PORT_NUMBER from DECKS \
-where (CARD_NUMBER!=-1)&&(PORT_NUMBER!=-1)&&(CHANNEL>0)&&(STATION_NAME=\"%s\") \
-order by CHANNEL",(const char *)q->value(0).toString().lower());
+    sql=QString("select ")+
+      "CHANNEL,"+          // 00
+      "MON_PORT_NUMBER "+  // 01
+      "from DECKS where "+
+      "(CARD_NUMBER!=-1)&&(PORT_NUMBER!=-1)&&(CHANNEL>0)&&"+
+      "(STATION_NAME=\""+RDEscapeString(q->value(0).toString().lower())+"\") "+
+      "order by CHANNEL";
     q1=new RDSqlQuery(sql);
     while(q1->next()) {
       catch_connect.back()->chan.push_back(q1->value(0).toUInt());
@@ -1585,7 +1590,9 @@ int MainWidget::AddRecord()
     n=1;
   }
   delete q;
-  sql=QString().sprintf("insert into RECORDINGS set ID=%d",n);
+  sql=QString("insert into RECORDINGS set ")+
+    QString().sprintf("ID=%d,",n)+
+    "STATION_NAME=\""+RDEscapeString(rda->station()->name())+"\"";
   q=new RDSqlQuery(sql);
   delete q;
   return n;
@@ -1846,11 +1853,12 @@ void MainWidget::RefreshList()
       l->setText(6,QString().
 		 sprintf("%s %s",(const char *)str,
 			 (const char *)q->value(5).toString()));
-      sql=QString().sprintf("select SWITCH_STATION,SWITCH_MATRIX\
-                                 from DECKS where			\
-                                 (STATION_NAME=\"%s\")&&(CHANNEL=%d)",
-			    (const char *)q->value(2).toString(),
-			    q->value(23).toInt());
+      sql=QString("select ")+
+	"SWITCH_STATION,"+  // 00
+	"SWITCH_MATRIX "+   // 01
+	"from DECKS where "+
+	"(STATION_NAME=\""+RDEscapeString(q->value(2).toString())+"\")&&"+
+	QString().sprintf("(CHANNEL=%d)",q->value(23).toInt());
       q1=new RDSqlQuery(sql);
       if(q1->first()) {  // Source
 	l->setText(5,GetSourceName(q1->value(0).toString(),  
@@ -2224,11 +2232,12 @@ void MainWidget::RefreshLine(RDListViewItem *item)
 			      q->value(38).toInt()));
 	break;
       }	
-      sql=QString().sprintf("select SWITCH_STATION,SWITCH_MATRIX\
-                                 from DECKS where			\
-                                 (STATION_NAME=\"%s\")&&(CHANNEL=%d)",
-			    (const char *)q->value(2).toString(),
-			    q->value(23).toInt());
+      sql=QString("select ")+
+	"SWITCH_STATION,"+  // 00
+	"SWITCH_MATRIX "+   // 01
+	"from DECKS where "+
+	"(STATION_NAME=\""+RDEscapeString(q->value(2).toString())+"\")&&"+
+	QString().sprintf("(CHANNEL=%d)",q->value(23).toInt());
       q1=new RDSqlQuery(sql);
       if(q1->first()) {
 	item->setText(5,GetSourceName(q1->value(0).toString(),
@@ -2481,11 +2490,10 @@ void MainWidget::DisplayExitCode(RDListViewItem *item,
 QString MainWidget::GetSourceName(QString station,int matrix,int input)
 {
   QString input_name;
-  QString sql=QString().sprintf("select NAME from INPUTS where \
-                                 (STATION_NAME=\"%s\")&&\
-                                 (MATRIX=%d)&&(NUMBER=%d)",
-				(const char *)station,
-				matrix,input);
+  QString sql=QString("select NAME from INPUTS where ")+
+    "(STATION_NAME=\""+RDEscapeString(station)+"\")&&"+
+    QString().sprintf("(MATRIX=%d)&&",matrix)+
+    QString().sprintf("(NUMBER=%d)",input);
   RDSqlQuery *q=new RDSqlQuery(sql);
   if(q->first()) {
     input_name=q->value(0).toString();
@@ -2498,11 +2506,10 @@ QString MainWidget::GetSourceName(QString station,int matrix,int input)
 QString MainWidget::GetDestinationName(QString station,int matrix,int output)
 {
   QString output_name;
-  QString sql=QString().sprintf("select NAME from OUTPUTS where \
-                                 (STATION_NAME=\"%s\")&&\
-                                 (MATRIX=%d)&&(NUMBER=%d)",
-				(const char *)station,
-				matrix,output);
+  QString sql=QString("select NAME from OUTPUTS where ")+
+    "(STATION_NAME=\""+RDEscapeString(station)+"\")&&"+
+    QString().sprintf("(MATRIX=%d)&&",matrix)+
+    QString().sprintf("(NUMBER=%d)",output);
   RDSqlQuery *q=new RDSqlQuery(sql);
   if(q->first()) {
     output_name=q->value(0).toString();
diff --git a/utils/rdrevert/rdrevert.cpp b/utils/rdrevert/rdrevert.cpp
index a7a3baba..f2a79e93 100644
--- a/utils/rdrevert/rdrevert.cpp
+++ b/utils/rdrevert/rdrevert.cpp
@@ -291,6 +291,10 @@ void MainObject::Revert(int schema) const
   case 283:
     Revert283();
     break;
+
+  case 284:
+    Revert284();
+    break;
   }
 }
 
@@ -1228,6 +1232,130 @@ void MainObject::Revert283() const
 }
 
 
+void MainObject::Revert284() const
+{
+  QString sql;
+  RDSqlQuery *q;
+
+  sql=QString("alter table RDAIRPLAY add column INSTANCE int unsigned ")+
+    "not null default 0 after STATION";
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  for(int i=9;i>=0;i--) {
+    sql=QString("alter table RDAIRPLAY add column ")+
+      QString().sprintf("STOP_RML%d char(255) after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table RDAIRPLAY add column ")+
+      QString().sprintf("START_RML%d char(255) after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table RDAIRPLAY add column ")+
+      QString().sprintf("PORT%d int default 0 after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table RDAIRPLAY add column ")+
+      QString().sprintf("CARD%d int default 0 after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+  }
+
+  sql=QString("alter table RDAIRPLAY add column ")+
+    "OP_MODE int default 2 after TRANS_LENGTH";
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  sql=QString("alter table RDAIRPLAY add column ")+
+    "START_MODE int default 0 after OP_MODE";
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+
+
+  sql=QString("alter table RDPANEL add column INSTANCE int unsigned ")+
+    "not null default 0 after STATION";
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  for(int i=9;i>=6;i--) {
+    sql=QString("alter table RDPANEL add column ")+
+      QString().sprintf("STOP_RML%d char(255) after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table RDPANEL add column ")+
+      QString().sprintf("START_RML%d char(255) after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table RDPANEL add column ")+
+      QString().sprintf("PORT%d int default 0 after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table RDPANEL add column ")+
+      QString().sprintf("CARD%d int default 0 after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+  }
+  for(int i=3;i>=2;i--) {
+    sql=QString("alter table RDPANEL add column ")+
+      QString().sprintf("STOP_RML%d char(255) after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table RDPANEL add column ")+
+      QString().sprintf("START_RML%d char(255) after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table RDPANEL add column ")+
+      QString().sprintf("PORT%d int default 0 after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+
+    sql=QString("alter table RDPANEL add column ")+
+      QString().sprintf("CARD%d int default 0 after INSTANCE",i);
+    q=new RDSqlQuery(sql,false);
+    delete q;
+  }
+
+  sql=QString("alter table MATRICES alter column PORT drop default");
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  sql=QString("alter table MATRICES alter column PORT_2 drop default");
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  sql=QString("alter table MATRICES alter column INPUTS drop default");
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  sql=QString("alter table MATRICES alter column OUTPUTS drop default");
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  sql=QString("alter table MATRICES alter column GPIS drop default");
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  sql=QString("alter table MATRICES alter column GPOS drop default");
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  sql=QString("alter table REPLICATORS alter column TYPE_ID drop default");
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  SetVersion(283);
+}
+
+
 int MainObject::GetVersion() const
 {
   QString sql;
@@ -1274,7 +1402,7 @@ int MainObject::MapSchema(const QString &ver)
   version_map["2.17"]=268;
   version_map["2.18"]=272;
   version_map["2.19"]=275;
-  version_map["2.20"]=283;
+  version_map["2.20"]=284;
 
   //
   // Normalize String
diff --git a/utils/rdrevert/rdrevert.h b/utils/rdrevert/rdrevert.h
index 96c911f7..a6024f9b 100644
--- a/utils/rdrevert/rdrevert.h
+++ b/utils/rdrevert/rdrevert.h
@@ -79,6 +79,7 @@ class MainObject : public QObject
   void Revert281() const;
   void Revert282() const;
   void Revert283() const;
+  void Revert284() const;
   int GetVersion() const;
   void SetVersion(int schema) const;
   int MapSchema(const QString &ver);