Index: src/alter.c
==================================================================
--- src/alter.c
+++ src/alter.c
@@ -411,11 +411,11 @@
   assert( sqlite3BtreeHoldsAllMutexes(pParse->db) );
 
   pTab = sqlite3LocateTableItem(pParse, 0, &pSrc->a[0]);
   if( !pTab ) goto exit_rename_table;
   iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema);
-  zDb = db->aDb[iDb].zName;
+  zDb = db->aDb[iDb].zDbSName;
   db->flags |= SQLITE_PreferBuiltin;
 
   /* Get a NULL terminated version of the new table name. */
   zName = sqlite3NameFromToken(db, pName);
   if( !zName ) goto exit_rename_table;
@@ -609,11 +609,11 @@
   pNew = pParse->pNewTable;
   assert( pNew );
 
   assert( sqlite3BtreeHoldsAllMutexes(db) );
   iDb = sqlite3SchemaToIndex(db, pNew->pSchema);
-  zDb = db->aDb[iDb].zName;
+  zDb = db->aDb[iDb].zDbSName;
   zTab = &pNew->zName[16];  /* Skip the "sqlite_altertab_" prefix on the name */
   pCol = &pNew->aCol[pNew->nCol-1];
   pDflt = pCol->pDflt;
   pTab = sqlite3FindTable(db, zTab, zDb);
   assert( pTab );

Index: src/analyze.c
==================================================================
--- src/analyze.c
+++ src/analyze.c
@@ -208,18 +208,18 @@
   ** if they do already exist.
   */
   for(i=0; i<ArraySize(aTable); i++){
     const char *zTab = aTable[i].zName;
     Table *pStat;
-    if( (pStat = sqlite3FindTable(db, zTab, pDb->zName))==0 ){
+    if( (pStat = sqlite3FindTable(db, zTab, pDb->zDbSName))==0 ){
       if( aTable[i].zCols ){
         /* The sqlite_statN table does not exist. Create it. Note that a 
         ** side-effect of the CREATE TABLE statement is to leave the rootpage 
         ** of the new table in register pParse->regRoot. This is important 
         ** because the OpenWrite opcode below will be needing it. */
         sqlite3NestedParse(pParse,
-            "CREATE TABLE %Q.%s(%s)", pDb->zName, zTab, aTable[i].zCols
+            "CREATE TABLE %Q.%s(%s)", pDb->zDbSName, zTab, aTable[i].zCols
         );
         aRoot[i] = pParse->regRoot;
         aCreateTbl[i] = OPFLAG_P2ISREG;
       }
     }else{
@@ -230,11 +230,11 @@
       aCreateTbl[i] = 0;
       sqlite3TableLock(pParse, iDb, aRoot[i], 1, zTab);
       if( zWhere ){
         sqlite3NestedParse(pParse,
            "DELETE FROM %Q.%s WHERE %s=%Q",
-           pDb->zName, zTab, zWhereType, zWhere
+           pDb->zDbSName, zTab, zWhereType, zWhere
         );
       }else{
         /* The sqlite_stat[134] table already exists.  Delete all rows. */
         sqlite3VdbeAddOp2(v, OP_Clear, aRoot[i], iDb);
       }
@@ -992,11 +992,11 @@
   iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
   assert( iDb>=0 );
   assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
 #ifndef SQLITE_OMIT_AUTHORIZATION
   if( sqlite3AuthCheck(pParse, SQLITE_ANALYZE, pTab->zName, 0,
-      db->aDb[iDb].zName ) ){
+      db->aDb[iDb].zDbSName ) ){
     return;
   }
 #endif
 
   /* Establish a read-lock on the table at the shared-cache level. 
@@ -1382,11 +1382,11 @@
     }
   }else{
     /* Form 3: Analyze the fully qualified table name */
     iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pTableName);
     if( iDb>=0 ){
-      zDb = db->aDb[iDb].zName;
+      zDb = db->aDb[iDb].zDbSName;
       z = sqlite3NameFromToken(db, pTableName);
       if( z ){
         if( (pIdx = sqlite3FindIndex(db, z, zDb))!=0 ){
           analyzeTable(pParse, pIdx->pTable, pIdx);
         }else if( (pTab = sqlite3LocateTable(pParse, 0, z, zDb))!=0 ){
@@ -1842,11 +1842,11 @@
 #endif
   }
 
   /* Load new statistics out of the sqlite_stat1 table */
   sInfo.db = db;
-  sInfo.zDatabase = db->aDb[iDb].zName;
+  sInfo.zDatabase = db->aDb[iDb].zDbSName;
   if( sqlite3FindTable(db, "sqlite_stat1", sInfo.zDatabase)!=0 ){
     zSql = sqlite3MPrintf(db, 
         "SELECT tbl,idx,stat FROM %Q.sqlite_stat1", sInfo.zDatabase);
     if( zSql==0 ){
       rc = SQLITE_NOMEM_BKPT;

Index: src/attach.c
==================================================================
--- src/attach.c
+++ src/attach.c
@@ -95,11 +95,11 @@
   if( !db->autoCommit ){
     zErrDyn = sqlite3MPrintf(db, "cannot ATTACH database within transaction");
     goto attach_error;
   }
   for(i=0; i<db->nDb; i++){
-    char *z = db->aDb[i].zName;
+    char *z = db->aDb[i].zDbSName;
     assert( z && zName );
     if( sqlite3StrICmp(z, zName)==0 ){
       zErrDyn = sqlite3MPrintf(db, "database %s is already in use", zName);
       goto attach_error;
     }
@@ -160,12 +160,12 @@
                       PAGER_SYNCHRONOUS_FULL | (db->flags & PAGER_FLAGS_MASK));
 #endif
     sqlite3BtreeLeave(aNew->pBt);
   }
   aNew->safety_level = SQLITE_DEFAULT_SYNCHRONOUS+1;
-  aNew->zName = sqlite3DbStrDup(db, zName);
-  if( rc==SQLITE_OK && aNew->zName==0 ){
+  aNew->zDbSName = sqlite3DbStrDup(db, zName);
+  if( rc==SQLITE_OK && aNew->zDbSName==0 ){
     rc = SQLITE_NOMEM_BKPT;
   }
 
 
 #ifdef SQLITE_HAS_CODEC
@@ -273,11 +273,11 @@
 
   if( zName==0 ) zName = "";
   for(i=0; i<db->nDb; i++){
     pDb = &db->aDb[i];
     if( pDb->pBt==0 ) continue;
-    if( sqlite3StrICmp(pDb->zName, zName)==0 ) break;
+    if( sqlite3StrICmp(pDb->zDbSName, zName)==0 ) break;
   }
 
   if( i>=db->nDb ){
     sqlite3_snprintf(sizeof(zErr),zErr, "no such database: %s", zName);
     goto detach_error;
@@ -431,11 +431,11 @@
   sqlite3 *db;
 
   db = pParse->db;
   assert( db->nDb>iDb );
   pFix->pParse = pParse;
-  pFix->zDb = db->aDb[iDb].zName;
+  pFix->zDb = db->aDb[iDb].zDbSName;
   pFix->pSchema = db->aDb[iDb].pSchema;
   pFix->zType = zType;
   pFix->pName = pName;
   pFix->bVarOnly = (iDb==1);
 }

Index: src/auth.c
==================================================================
--- src/auth.c
+++ src/auth.c
@@ -105,13 +105,13 @@
   Parse *pParse,                  /* The parser context */
   const char *zTab,               /* Table name */
   const char *zCol,               /* Column name */
   int iDb                         /* Index of containing database. */
 ){
-  sqlite3 *db = pParse->db;       /* Database handle */
-  char *zDb = db->aDb[iDb].zName; /* Name of attached database */
-  int rc;                         /* Auth callback return code */
+  sqlite3 *db = pParse->db;          /* Database handle */
+  char *zDb = db->aDb[iDb].zDbSName; /* Schema name of attached database */
+  int rc;                            /* Auth callback return code */
 
   if( db->init.busy ) return SQLITE_OK;
   rc = db->xAuth(db->pAuthArg, SQLITE_READ, zTab,zCol,zDb,pParse->zAuthContext
 #ifdef SQLITE_USER_AUTHENTICATION
                  ,db->auth.zAuthUser

Index: src/build.c
==================================================================
--- src/build.c
+++ src/build.c
@@ -316,14 +316,15 @@
     return 0;
   }
 #endif
   for(i=OMIT_TEMPDB; i<db->nDb; i++){
     int j = (i<2) ? i^1 : i;   /* Search TEMP before MAIN */
-    if( zDatabase!=0 && sqlite3StrICmp(zDatabase, db->aDb[j].zName) ) continue;
-    assert( sqlite3SchemaMutexHeld(db, j, 0) );
-    p = sqlite3HashFind(&db->aDb[j].pSchema->tblHash, zName);
-    if( p ) break;
+    if( zDatabase==0 || sqlite3StrICmp(zDatabase, db->aDb[j].zDbSName)==0 ){
+      assert( sqlite3SchemaMutexHeld(db, j, 0) );
+      p = sqlite3HashFind(&db->aDb[j].pSchema->tblHash, zName);
+      if( p ) break;
+    }
   }
   return p;
 }
 
 /*
@@ -393,11 +394,11 @@
 ){
   const char *zDb;
   assert( p->pSchema==0 || p->zDatabase==0 );
   if( p->pSchema ){
     int iDb = sqlite3SchemaToIndex(pParse->db, p->pSchema);
-    zDb = pParse->db->aDb[iDb].zName;
+    zDb = pParse->db->aDb[iDb].zDbSName;
   }else{
     zDb = p->zDatabase;
   }
   return sqlite3LocateTable(pParse, flags, p->zName, zDb);
 }
@@ -421,11 +422,11 @@
   assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) );
   for(i=OMIT_TEMPDB; i<db->nDb; i++){
     int j = (i<2) ? i^1 : i;  /* Search TEMP before MAIN */
     Schema *pSchema = db->aDb[j].pSchema;
     assert( pSchema );
-    if( zDb && sqlite3StrICmp(zDb, db->aDb[j].zName) ) continue;
+    if( zDb && sqlite3StrICmp(zDb, db->aDb[j].zDbSName) ) continue;
     assert( sqlite3SchemaMutexHeld(db, j, 0) );
     p = sqlite3HashFind(&pSchema->idxHash, zName);
     if( p ) break;
   }
   return p;
@@ -490,12 +491,12 @@
 void sqlite3CollapseDatabaseArray(sqlite3 *db){
   int i, j;
   for(i=j=2; i<db->nDb; i++){
     struct Db *pDb = &db->aDb[i];
     if( pDb->pBt==0 ){
-      sqlite3DbFree(db, pDb->zName);
-      pDb->zName = 0;
+      sqlite3DbFree(db, pDb->zDbSName);
+      pDb->zDbSName = 0;
       continue;
     }
     if( j<i ){
       db->aDb[j] = db->aDb[i];
     }
@@ -711,11 +712,11 @@
 int sqlite3FindDbName(sqlite3 *db, const char *zName){
   int i = -1;         /* Database number */
   if( zName ){
     Db *pDb;
     for(i=(db->nDb-1), pDb=&db->aDb[i]; i>=0; i--, pDb--){
-      if( 0==sqlite3StrICmp(pDb->zName, zName) ) break;
+      if( 0==sqlite3StrICmp(pDb->zDbSName, zName) ) break;
     }
   }
   return i;
 }
 
@@ -881,11 +882,11 @@
        SQLITE_CREATE_TABLE,
        SQLITE_CREATE_TEMP_TABLE,
        SQLITE_CREATE_VIEW,
        SQLITE_CREATE_TEMP_VIEW
     };
-    char *zDb = db->aDb[iDb].zName;
+    char *zDb = db->aDb[iDb].zDbSName;
     if( sqlite3AuthCheck(pParse, SQLITE_INSERT, SCHEMA_TABLE(isTemp), 0, zDb) ){
       goto begin_table_error;
     }
     if( !isVirtual && sqlite3AuthCheck(pParse, (int)aCode[isTemp+2*isView],
                                        zName, 0, zDb) ){
@@ -900,11 +901,11 @@
   ** to an sqlite3_declare_vtab() call. In that case only the column names
   ** and types will be used, so there is no need to test for namespace
   ** collisions.
   */
   if( !IN_DECLARE_VTAB ){
-    char *zDb = db->aDb[iDb].zName;
+    char *zDb = db->aDb[iDb].zDbSName;
     if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){
       goto begin_table_error;
     }
     pTable = sqlite3FindTable(db, zName, zDb);
     if( pTable ){
@@ -1993,11 +1994,11 @@
     */
     sqlite3NestedParse(pParse,
       "UPDATE %Q.%s "
          "SET type='%s', name=%Q, tbl_name=%Q, rootpage=#%d, sql=%Q "
        "WHERE rowid=#%d",
-      db->aDb[iDb].zName, SCHEMA_TABLE(iDb),
+      db->aDb[iDb].zDbSName, SCHEMA_TABLE(iDb),
       zType,
       p->zName,
       p->zName,
       pParse->regRoot,
       zStmt,
@@ -2014,11 +2015,11 @@
       Db *pDb = &db->aDb[iDb];
       assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
       if( pDb->pSchema->pSeqTab==0 ){
         sqlite3NestedParse(pParse,
           "CREATE TABLE %Q.sqlite_sequence(name,seq)",
-          pDb->zName
+          pDb->zDbSName
         );
       }
     }
 #endif
 
@@ -2328,11 +2329,11 @@
   ** is in register NNN.  See grammar rules associated with the TK_REGISTER
   ** token for additional information.
   */
   sqlite3NestedParse(pParse, 
      "UPDATE %Q.%s SET rootpage=%d WHERE #%d AND rootpage=#%d",
-     pParse->db->aDb[iDb].zName, SCHEMA_TABLE(iDb), iTable, r1, r1);
+     pParse->db->aDb[iDb].zDbSName, SCHEMA_TABLE(iDb), iTable, r1, r1);
 #endif
   sqlite3ReleaseTempReg(pParse, r1);
 }
 
 /*
@@ -2404,11 +2405,11 @@
   int iDb,               /* The database number */
   const char *zType,     /* "idx" or "tbl" */
   const char *zName      /* Name of index or table */
 ){
   int i;
-  const char *zDbName = pParse->db->aDb[iDb].zName;
+  const char *zDbName = pParse->db->aDb[iDb].zDbSName;
   for(i=1; i<=4; i++){
     char zTab[24];
     sqlite3_snprintf(sizeof(zTab),zTab,"sqlite_stat%d",i);
     if( sqlite3FindTable(pParse->db, zTab, zDbName) ){
       sqlite3NestedParse(pParse,
@@ -2457,11 +2458,11 @@
   ** move as a result of the drop (can happen in auto-vacuum mode).
   */
   if( pTab->tabFlags & TF_Autoincrement ){
     sqlite3NestedParse(pParse,
       "DELETE FROM %Q.sqlite_sequence WHERE name=%Q",
-      pDb->zName, pTab->zName
+      pDb->zDbSName, pTab->zName
     );
   }
 #endif
 
   /* Drop all SQLITE_MASTER table and index entries that refer to the
@@ -2471,11 +2472,11 @@
   ** created in the temp database that refers to a table in another
   ** database.
   */
   sqlite3NestedParse(pParse, 
       "DELETE FROM %Q.%s WHERE tbl_name=%Q and type!='trigger'",
-      pDb->zName, SCHEMA_TABLE(iDb), pTab->zName);
+      pDb->zDbSName, SCHEMA_TABLE(iDb), pTab->zName);
   if( !isView && !IsVirtual(pTab) ){
     destroyTable(pParse, pTab);
   }
 
   /* Remove the table entry from SQLite's internal schema and modify
@@ -2525,11 +2526,11 @@
   }
 #ifndef SQLITE_OMIT_AUTHORIZATION
   {
     int code;
     const char *zTab = SCHEMA_TABLE(iDb);
-    const char *zDb = db->aDb[iDb].zName;
+    const char *zDb = db->aDb[iDb].zDbSName;
     const char *zArg2 = 0;
     if( sqlite3AuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb)){
       goto exit_drop_table;
     }
     if( isView ){
@@ -2766,11 +2767,11 @@
   sqlite3 *db = pParse->db;      /* The database connection */
   int iDb = sqlite3SchemaToIndex(db, pIndex->pSchema);
 
 #ifndef SQLITE_OMIT_AUTHORIZATION
   if( sqlite3AuthCheck(pParse, SQLITE_REINDEX, pIndex->zName, 0,
-      db->aDb[iDb].zName ) ){
+      db->aDb[iDb].zDbSName ) ){
     return;
   }
 #endif
 
   /* Require a write-lock on the table to perform this operation */
@@ -3018,11 +3019,11 @@
       if( sqlite3FindTable(db, zName, 0)!=0 ){
         sqlite3ErrorMsg(pParse, "there is already a table named %s", zName);
         goto exit_create_index;
       }
     }
-    if( sqlite3FindIndex(db, zName, pDb->zName)!=0 ){
+    if( sqlite3FindIndex(db, zName, pDb->zDbSName)!=0 ){
       if( !ifNotExist ){
         sqlite3ErrorMsg(pParse, "index %s already exists", zName);
       }else{
         assert( !db->init.busy );
         sqlite3CodeVerifySchema(pParse, iDb);
@@ -3048,11 +3049,11 @@
 
   /* Check for authorization to create an index.
   */
 #ifndef SQLITE_OMIT_AUTHORIZATION
   {
-    const char *zDb = pDb->zName;
+    const char *zDb = pDb->zDbSName;
     if( sqlite3AuthCheck(pParse, SQLITE_INSERT, SCHEMA_TABLE(iDb), 0, zDb) ){
       goto exit_create_index;
     }
     i = SQLITE_CREATE_INDEX;
     if( !OMIT_TEMPDB && iDb==1 ) i = SQLITE_CREATE_TEMP_INDEX;
@@ -3363,11 +3364,11 @@
 
     /* Add an entry in sqlite_master for this index
     */
     sqlite3NestedParse(pParse, 
         "INSERT INTO %Q.%s VALUES('index',%Q,%Q,#%d,%Q);",
-        db->aDb[iDb].zName, SCHEMA_TABLE(iDb),
+        db->aDb[iDb].zDbSName, SCHEMA_TABLE(iDb),
         pIndex->zName,
         pTab->zName,
         iMem,
         zStmt
     );
@@ -3497,11 +3498,11 @@
   iDb = sqlite3SchemaToIndex(db, pIndex->pSchema);
 #ifndef SQLITE_OMIT_AUTHORIZATION
   {
     int code = SQLITE_DROP_INDEX;
     Table *pTab = pIndex->pTable;
-    const char *zDb = db->aDb[iDb].zName;
+    const char *zDb = db->aDb[iDb].zDbSName;
     const char *zTab = SCHEMA_TABLE(iDb);
     if( sqlite3AuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb) ){
       goto exit_drop_index;
     }
     if( !OMIT_TEMPDB && iDb ) code = SQLITE_DROP_TEMP_INDEX;
@@ -3515,11 +3516,11 @@
   v = sqlite3GetVdbe(pParse);
   if( v ){
     sqlite3BeginWriteOperation(pParse, 1, iDb);
     sqlite3NestedParse(pParse,
        "DELETE FROM %Q.%s WHERE name=%Q AND type='index'",
-       db->aDb[iDb].zName, SCHEMA_TABLE(iDb), pIndex->zName
+       db->aDb[iDb].zDbSName, SCHEMA_TABLE(iDb), pIndex->zName
     );
     sqlite3ClearStatTables(pParse, iDb, "idx", pIndex->zName);
     sqlite3ChangeCookie(pParse, iDb);
     destroyRootPage(pParse, pIndex->tnum, iDb);
     sqlite3VdbeAddOp4(v, OP_DropIndex, iDb, 0, 0, pIndex->zName, 0);
@@ -4060,11 +4061,11 @@
 void sqlite3CodeVerifyNamedSchema(Parse *pParse, const char *zDb){
   sqlite3 *db = pParse->db;
   int i;
   for(i=0; i<db->nDb; i++){
     Db *pDb = &db->aDb[i];
-    if( pDb->pBt && (!zDb || 0==sqlite3StrICmp(zDb, pDb->zName)) ){
+    if( pDb->pBt && (!zDb || 0==sqlite3StrICmp(zDb, pDb->zDbSName)) ){
       sqlite3CodeVerifySchema(pParse, i);
     }
   }
 }
 
@@ -4307,11 +4308,11 @@
   }
   iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pObjName);
   if( iDb<0 ) return;
   z = sqlite3NameFromToken(db, pObjName);
   if( z==0 ) return;
-  zDb = db->aDb[iDb].zName;
+  zDb = db->aDb[iDb].zDbSName;
   pTab = sqlite3FindTable(db, z, zDb);
   if( pTab ){
     reindexTable(pParse, pTab, 0);
     sqlite3DbFree(db, z);
     return;

Index: src/dbstat.c
==================================================================
--- src/dbstat.c
+++ src/dbstat.c
@@ -600,11 +600,11 @@
   zSql = sqlite3_mprintf(
       "SELECT 'sqlite_master' AS name, 1 AS rootpage, 'table' AS type"
       "  UNION ALL  "
       "SELECT name, rootpage, type"
       "  FROM \"%w\".%s WHERE rootpage!=0"
-      "  ORDER BY name", pTab->db->aDb[pCsr->iDb].zName, zMaster);
+      "  ORDER BY name", pTab->db->aDb[pCsr->iDb].zDbSName, zMaster);
   if( zSql==0 ){
     return SQLITE_NOMEM_BKPT;
   }else{
     rc = sqlite3_prepare_v2(pTab->db, zSql, -1, &pCsr->pStmt, 0);
     sqlite3_free(zSql);
@@ -654,11 +654,11 @@
       sqlite3_result_int(ctx, pCsr->szPage);
       break;
     default: {          /* schema */
       sqlite3 *db = sqlite3_context_db_handle(ctx);
       int iDb = pCsr->iDb;
-      sqlite3_result_text(ctx, db->aDb[iDb].zName, -1, SQLITE_STATIC);
+      sqlite3_result_text(ctx, db->aDb[iDb].zDbSName, -1, SQLITE_STATIC);
       break;
     }
   }
   return SQLITE_OK;
 }

Index: src/delete.c
==================================================================
--- src/delete.c
+++ src/delete.c
@@ -100,11 +100,11 @@
   pWhere = sqlite3ExprDup(db, pWhere, 0);
   pFrom = sqlite3SrcListAppend(db, 0, 0, 0);
   if( pFrom ){
     assert( pFrom->nSrc==1 );
     pFrom->a[0].zName = sqlite3DbStrDup(db, pView->zName);
-    pFrom->a[0].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zName);
+    pFrom->a[0].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zDbSName);
     assert( pFrom->a[0].pOn==0 );
     assert( pFrom->a[0].pUsing==0 );
   }
   pSel = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, 0, 
                           SF_IncludeHidden, 0, 0);
@@ -287,11 +287,11 @@
   if( sqlite3IsReadOnly(pParse, pTab, (pTrigger?1:0)) ){
     goto delete_from_cleanup;
   }
   iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
   assert( iDb<db->nDb );
-  zDb = db->aDb[iDb].zName;
+  zDb = db->aDb[iDb].zDbSName;
   rcauth = sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, zDb);
   assert( rcauth==SQLITE_OK || rcauth==SQLITE_DENY || rcauth==SQLITE_IGNORE );
   if( rcauth==SQLITE_DENY ){
     goto delete_from_cleanup;
   }

Index: src/fkey.c
==================================================================
--- src/fkey.c
+++ src/fkey.c
@@ -869,11 +869,11 @@
 
   /* If foreign-keys are disabled, this function is a no-op. */
   if( (db->flags&SQLITE_ForeignKeys)==0 ) return;
 
   iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
-  zDb = db->aDb[iDb].zName;
+  zDb = db->aDb[iDb].zDbSName;
 
   /* Loop through all the foreign key constraints for which pTab is the
   ** child table (the table that the foreign key definition is part of).  */
   for(pFKey=pTab->pFKey; pFKey; pFKey=pFKey->pNextFrom){
     Table *pTo;                   /* Parent table of foreign key pFKey */

Index: src/insert.c
==================================================================
--- src/insert.c
+++ src/insert.c
@@ -545,11 +545,11 @@
     goto insert_cleanup;
   }
   iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
   assert( iDb<db->nDb );
   pDb = &db->aDb[iDb];
-  zDb = pDb->zName;
+  zDb = pDb->zDbSName;
   if( sqlite3AuthCheck(pParse, SQLITE_INSERT, pTab->zName, 0, zDb) ){
     goto insert_cleanup;
   }
   withoutRowid = !HasRowid(pTab);
 

Index: src/main.c
==================================================================
--- src/main.c
+++ src/main.c
@@ -2930,13 +2930,13 @@
   db->aDb[1].pSchema = sqlite3SchemaGet(db, 0);
 
   /* The default safety_level for the main database is FULL; for the temp
   ** database it is OFF. This matches the pager layer defaults.  
   */
-  db->aDb[0].zName = "main";
+  db->aDb[0].zDbSName = "main";
   db->aDb[0].safety_level = SQLITE_DEFAULT_SYNCHRONOUS+1;
-  db->aDb[1].zName = "temp";
+  db->aDb[1].zDbSName = "temp";
   db->aDb[1].safety_level = PAGER_SYNCHRONOUS_OFF;
 
   db->magic = SQLITE_MAGIC_OPEN;
   if( db->mallocFailed ){
     goto opendb_out;
@@ -3893,11 +3893,11 @@
 */
 Btree *sqlite3DbNameToBtree(sqlite3 *db, const char *zDbName){
   int i;
   for(i=0; i<db->nDb; i++){
     if( db->aDb[i].pBt
-     && (zDbName==0 || sqlite3StrICmp(zDbName, db->aDb[i].zName)==0)
+     && (zDbName==0 || sqlite3StrICmp(zDbName, db->aDb[i].zDbSName)==0)
     ){
       return db->aDb[i].pBt;
     }
   }
   return 0;

Index: src/pragma.c
==================================================================
--- src/pragma.c
+++ src/pragma.c
@@ -336,11 +336,11 @@
   }else{
     zRight = sqlite3NameFromToken(db, pValue);
   }
 
   assert( pId2 );
-  zDb = pId2->n>0 ? pDb->zName : 0;
+  zDb = pId2->n>0 ? pDb->zDbSName : 0;
   if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, zDb) ){
     goto pragma_out;
   }
 
   /* Send an SQLITE_FCNTL_PRAGMA file-control to the underlying VFS
@@ -1189,14 +1189,14 @@
     int i;
     pParse->nMem = 3;
     setAllColumnNames(v, 3, azCol); assert( 3==ArraySize(azCol) );
     for(i=0; i<db->nDb; i++){
       if( db->aDb[i].pBt==0 ) continue;
-      assert( db->aDb[i].zName!=0 );
+      assert( db->aDb[i].zDbSName!=0 );
       sqlite3VdbeMultiLoad(v, 1, "iss",
          i,
-         db->aDb[i].zName,
+         db->aDb[i].zDbSName,
          sqlite3BtreeGetFilename(db->aDb[i].pBt));
       sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
     }
   }
   break;
@@ -1481,11 +1481,11 @@
       /* Do the b-tree integrity checks */
       sqlite3VdbeAddOp4(v, OP_IntegrityCk, 2, cnt, 1, (char*)aRoot,P4_INTARRAY);
       sqlite3VdbeChangeP5(v, (u8)i);
       addr = sqlite3VdbeAddOp1(v, OP_IsNull, 2); VdbeCoverage(v);
       sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0,
-         sqlite3MPrintf(db, "*** in database %s ***\n", db->aDb[i].zName),
+         sqlite3MPrintf(db, "*** in database %s ***\n", db->aDb[i].zDbSName),
          P4_DYNAMIC);
       sqlite3VdbeAddOp3(v, OP_Move, 2, 4, 1);
       sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 2);
       sqlite3VdbeAddOp2(v, OP_ResultRow, 2, 1);
       sqlite3VdbeJumpHere(v, addr);
@@ -1920,19 +1920,19 @@
     pParse->nMem = 2;
     for(i=0; i<db->nDb; i++){
       Btree *pBt;
       const char *zState = "unknown";
       int j;
-      if( db->aDb[i].zName==0 ) continue;
+      if( db->aDb[i].zDbSName==0 ) continue;
       pBt = db->aDb[i].pBt;
       if( pBt==0 || sqlite3BtreePager(pBt)==0 ){
         zState = "closed";
-      }else if( sqlite3_file_control(db, i ? db->aDb[i].zName : 0, 
+      }else if( sqlite3_file_control(db, i ? db->aDb[i].zDbSName : 0, 
                                      SQLITE_FCNTL_LOCKSTATE, &j)==SQLITE_OK ){
          zState = azLockName[j];
       }
-      sqlite3VdbeMultiLoad(v, 1, "ss", db->aDb[i].zName, zState);
+      sqlite3VdbeMultiLoad(v, 1, "ss", db->aDb[i].zDbSName, zState);
       sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2);
     }
     break;
   }
 #endif

Index: src/prepare.c
==================================================================
--- src/prepare.c
+++ src/prepare.c
@@ -105,11 +105,11 @@
     ** constraint for a CREATE TABLE.  The index should have already
     ** been created when we processed the CREATE TABLE.  All we have
     ** to do here is record the root page number for that index.
     */
     Index *pIndex;
-    pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zName);
+    pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zDbSName);
     if( pIndex==0 ){
       /* This can occur if there exists an index on a TEMP table which
       ** has the same name as another index on a permanent index.  Since
       ** the permanent table is hidden by the TEMP table, we can also
       ** safely ignore the index on the permanent table.
@@ -284,11 +284,11 @@
   assert( db->init.busy );
   {
     char *zSql;
     zSql = sqlite3MPrintf(db, 
         "SELECT name, rootpage, sql FROM \"%w\".%s ORDER BY rowid",
-        db->aDb[iDb].zName, zMasterName);
+        db->aDb[iDb].zDbSName, zMasterName);
 #ifndef SQLITE_OMIT_AUTHORIZATION
     {
       sqlite3_xauth xAuth;
       xAuth = db->xAuth;
       db->xAuth = 0;
@@ -559,11 +559,11 @@
     Btree *pBt = db->aDb[i].pBt;
     if( pBt ){
       assert( sqlite3BtreeHoldsMutex(pBt) );
       rc = sqlite3BtreeSchemaLocked(pBt);
       if( rc ){
-        const char *zDb = db->aDb[i].zName;
+        const char *zDb = db->aDb[i].zDbSName;
         sqlite3ErrorWithMsg(db, rc, "database schema is locked: %s", zDb);
         testcase( db->flags & SQLITE_ReadUncommitted );
         goto end_prepare;
       }
     }

Index: src/resolve.c
==================================================================
--- src/resolve.c
+++ src/resolve.c
@@ -219,12 +219,12 @@
       ** legacy and because it does not hurt anything to just ignore the
       ** database name. */
       zDb = 0;
     }else{
       for(i=0; i<db->nDb; i++){
-        assert( db->aDb[i].zName );
-        if( sqlite3StrICmp(db->aDb[i].zName,zDb)==0 ){
+        assert( db->aDb[i].zDbSName );
+        if( sqlite3StrICmp(db->aDb[i].zDbSName,zDb)==0 ){
           pSchema = db->aDb[i].pSchema;
           break;
         }
       }
     }

Index: src/select.c
==================================================================
--- src/select.c
+++ src/select.c
@@ -1456,11 +1456,11 @@
           estWidth = pTab->aCol[iCol].szEst;
         }
         zOrigTab = pTab->zName;
         if( pNC->pParse ){
           int iDb = sqlite3SchemaToIndex(pNC->pParse->db, pTab->pSchema);
-          zOrigDb = pNC->pParse->db->aDb[iDb].zName;
+          zOrigDb = pNC->pParse->db->aDb[iDb].zDbSName;
         }
 #else
         if( iCol<0 ){
           zType = "INTEGER";
         }else{
@@ -4412,11 +4412,11 @@
             pSub = 0;
             if( zTName && sqlite3StrICmp(zTName, zTabName)!=0 ){
               continue;
             }
             iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
-            zSchemaName = iDb>=0 ? db->aDb[iDb].zName : "*";
+            zSchemaName = iDb>=0 ? db->aDb[iDb].zDbSName : "*";
           }
           for(j=0; j<pTab->nCol; j++){
             char *zName = pTab->aCol[j].zName;
             char *zColname;  /* The computed column name */
             char *zToFree;   /* Malloced string that needs to be freed */

Index: src/sqliteInt.h
==================================================================
--- src/sqliteInt.h
+++ src/sqliteInt.h
@@ -1095,11 +1095,11 @@
 ** in the sqlite.aDb[] array.  aDb[0] is the main database file and
 ** aDb[1] is the database file used to hold temporary tables.  Additional
 ** databases may be attached.
 */
 struct Db {
-  char *zName;         /* Name of this database */
+  char *zDbSName;      /* Name of this database. (schema name, not filename) */
   Btree *pBt;          /* The B*Tree structure for this database file */
   u8 safety_level;     /* How aggressive at syncing data to disk */
   u8 bSyncSet;         /* True if "PRAGMA synchronous=N" has been run */
   Schema *pSchema;     /* Pointer to database schema (possibly shared) */
 };

Index: src/trigger.c
==================================================================
--- src/trigger.c
+++ src/trigger.c
@@ -212,12 +212,12 @@
   iTabDb = sqlite3SchemaToIndex(db, pTab->pSchema);
 
 #ifndef SQLITE_OMIT_AUTHORIZATION
   {
     int code = SQLITE_CREATE_TRIGGER;
-    const char *zDb = db->aDb[iTabDb].zName;
-    const char *zDbTrig = isTemp ? db->aDb[1].zName : zDb;
+    const char *zDb = db->aDb[iTabDb].zDbSName;
+    const char *zDbTrig = isTemp ? db->aDb[1].zDbSName : zDb;
     if( iTabDb==1 || isTemp ) code = SQLITE_CREATE_TEMP_TRIGGER;
     if( sqlite3AuthCheck(pParse, code, zName, pTab->zName, zDbTrig) ){
       goto trigger_cleanup;
     }
     if( sqlite3AuthCheck(pParse, SQLITE_INSERT, SCHEMA_TABLE(iTabDb),0,zDb)){
@@ -307,11 +307,11 @@
     if( v==0 ) goto triggerfinish_cleanup;
     sqlite3BeginWriteOperation(pParse, 0, iDb);
     z = sqlite3DbStrNDup(db, (char*)pAll->z, pAll->n);
     sqlite3NestedParse(pParse,
        "INSERT INTO %Q.%s VALUES('trigger',%Q,%Q,0,'CREATE TRIGGER %q')",
-       db->aDb[iDb].zName, SCHEMA_TABLE(iDb), zName,
+       db->aDb[iDb].zDbSName, SCHEMA_TABLE(iDb), zName,
        pTrig->table, z);
     sqlite3DbFree(db, z);
     sqlite3ChangeCookie(pParse, iDb);
     sqlite3VdbeAddParseSchemaOp(v, iDb,
         sqlite3MPrintf(db, "type='trigger' AND name='%q'", zName));
@@ -496,11 +496,11 @@
   zDb = pName->a[0].zDatabase;
   zName = pName->a[0].zName;
   assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) );
   for(i=OMIT_TEMPDB; i<db->nDb; i++){
     int j = (i<2) ? i^1 : i;  /* Search TEMP before MAIN */
-    if( zDb && sqlite3StrICmp(db->aDb[j].zName, zDb) ) continue;
+    if( zDb && sqlite3StrICmp(db->aDb[j].zDbSName, zDb) ) continue;
     assert( sqlite3SchemaMutexHeld(db, j, 0) );
     pTrigger = sqlite3HashFind(&(db->aDb[j].pSchema->trigHash), zName);
     if( pTrigger ) break;
   }
   if( !pTrigger ){
@@ -542,11 +542,11 @@
   assert( pTable );
   assert( pTable->pSchema==pTrigger->pSchema || iDb==1 );
 #ifndef SQLITE_OMIT_AUTHORIZATION
   {
     int code = SQLITE_DROP_TRIGGER;
-    const char *zDb = db->aDb[iDb].zName;
+    const char *zDb = db->aDb[iDb].zDbSName;
     const char *zTab = SCHEMA_TABLE(iDb);
     if( iDb==1 ) code = SQLITE_DROP_TEMP_TRIGGER;
     if( sqlite3AuthCheck(pParse, code, pTrigger->zName, pTable->zName, zDb) ||
       sqlite3AuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb) ){
       return;
@@ -558,11 +558,11 @@
   */
   assert( pTable!=0 );
   if( (v = sqlite3GetVdbe(pParse))!=0 ){
     sqlite3NestedParse(pParse,
        "DELETE FROM %Q.%s WHERE name=%Q AND type='trigger'",
-       db->aDb[iDb].zName, SCHEMA_TABLE(iDb), pTrigger->zName
+       db->aDb[iDb].zDbSName, SCHEMA_TABLE(iDb), pTrigger->zName
     );
     sqlite3ChangeCookie(pParse, iDb);
     sqlite3VdbeAddOp4(v, OP_DropTrigger, iDb, 0, 0, pTrigger->zName, 0);
   }
 }
@@ -661,12 +661,14 @@
   if( pSrc ){
     assert( pSrc->nSrc>0 );
     pSrc->a[pSrc->nSrc-1].zName = sqlite3DbStrDup(db, pStep->zTarget);
     iDb = sqlite3SchemaToIndex(db, pStep->pTrig->pSchema);
     if( iDb==0 || iDb>=2 ){
+      const char *zDb;
       assert( iDb<db->nDb );
-      pSrc->a[pSrc->nSrc-1].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zName);
+      zDb = db->aDb[iDb].zDbSName;
+      pSrc->a[pSrc->nSrc-1].zDatabase =  sqlite3DbStrDup(db, zDb);
     }
   }
   return pSrc;
 }
 

Index: src/update.c
==================================================================
--- src/update.c
+++ src/update.c
@@ -247,11 +247,11 @@
 #ifndef SQLITE_OMIT_AUTHORIZATION
     {
       int rc;
       rc = sqlite3AuthCheck(pParse, SQLITE_UPDATE, pTab->zName,
                             j<0 ? "ROWID" : pTab->aCol[j].zName,
-                            db->aDb[iDb].zName);
+                            db->aDb[iDb].zDbSName);
       if( rc==SQLITE_DENY ){
         goto update_cleanup;
       }else if( rc==SQLITE_IGNORE ){
         aXRef[j] = -1;
       }

Index: src/vacuum.c
==================================================================
--- src/vacuum.c
+++ src/vacuum.c
@@ -171,11 +171,11 @@
     zSql = "ATTACH '' AS vacuum_db;";
   }
   rc = execSql(db, pzErrMsg, zSql);
   if( db->nDb>nDb ){
     pDb = &db->aDb[db->nDb-1];
-    assert( strcmp(pDb->zName,"vacuum_db")==0 );
+    assert( strcmp(pDb->zDbSName,"vacuum_db")==0 );
   }
   if( rc!=SQLITE_OK ) goto end_of_vacuum;
   pTemp = db->aDb[db->nDb-1].pBt;
 
   /* The call to execSql() to attach the temp database has left the file

Index: src/vdbe.c
==================================================================
--- src/vdbe.c
+++ src/vdbe.c
@@ -4344,11 +4344,11 @@
   }
 
   if( pOp->p4type==P4_TABLE && HAS_UPDATE_HOOK(db) ){
     assert( pC->isTable );
     assert( pC->iDb>=0 );
-    zDb = db->aDb[pC->iDb].zName;
+    zDb = db->aDb[pC->iDb].zDbSName;
     pTab = pOp->p4.pTab;
     assert( HasRowid(pTab) );
     op = ((pOp->p5 & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_INSERT);
   }else{
     pTab = 0; /* Not needed.  Silence a comiler warning. */
@@ -4461,11 +4461,11 @@
   ** last moved with OP_Next or OP_Prev, not Seek or NotFound, set 
   ** VdbeCursor.movetoTarget to the current rowid.  */
   if( pOp->p4type==P4_TABLE && HAS_UPDATE_HOOK(db) ){
     assert( pC->iDb>=0 );
     assert( pOp->p4.pTab!=0 );
-    zDb = db->aDb[pC->iDb].zName;
+    zDb = db->aDb[pC->iDb].zDbSName;
     pTab = pOp->p4.pTab;
     if( (pOp->p5 & OPFLAG_SAVEPOSITION)!=0 && pC->isTable ){
       pC->movetoTarget = sqlite3BtreeIntegerKey(pC->uc.pCursor);
     }
   }else{
@@ -5431,11 +5431,11 @@
     initData.db = db;
     initData.iDb = pOp->p1;
     initData.pzErrMsg = &p->zErrMsg;
     zSql = sqlite3MPrintf(db,
        "SELECT name, rootpage, sql FROM '%q'.%s WHERE %s ORDER BY rowid",
-       db->aDb[iDb].zName, zMaster, pOp->p4.z);
+       db->aDb[iDb].zDbSName, zMaster, pOp->p4.z);
     if( zSql==0 ){
       rc = SQLITE_NOMEM_BKPT;
     }else{
       assert( db->init.busy==0 );
       db->init.busy = 1;
@@ -6815,11 +6815,11 @@
   zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql);
   if( zTrace ){
     int i;
     for(i=0; i<db->nDb; i++){
       if( DbMaskTest(p->btreeMask, i)==0 ) continue;
-      sqlite3_file_control(db, db->aDb[i].zName, SQLITE_FCNTL_TRACE, zTrace);
+      sqlite3_file_control(db, db->aDb[i].zDbSName, SQLITE_FCNTL_TRACE, zTrace);
     }
   }
 #endif /* SQLITE_USE_FCNTL_TRACE */
 #ifdef SQLITE_DEBUG
   if( (db->flags & SQLITE_SqlTrace)!=0

Index: src/vdbeapi.c
==================================================================
--- src/vdbeapi.c
+++ src/vdbeapi.c
@@ -497,11 +497,11 @@
       int nEntry;
       sqlite3BtreeEnter(pBt);
       nEntry = sqlite3PagerWalCallback(sqlite3BtreePager(pBt));
       sqlite3BtreeLeave(pBt);
       if( db->xWalCallback && nEntry>0 && rc==SQLITE_OK ){
-        rc = db->xWalCallback(db->pWalArg, db, db->aDb[i].zName, nEntry);
+        rc = db->xWalCallback(db->pWalArg, db, db->aDb[i].zDbSName, nEntry);
       }
     }
   }
 #endif
   return rc;

Index: src/vdbeblob.c
==================================================================
--- src/vdbeblob.c
+++ src/vdbeblob.c
@@ -174,11 +174,11 @@
       rc = SQLITE_ERROR;
       sqlite3BtreeLeaveAll(db);
       goto blob_open_out;
     }
     pBlob->pTab = pTab;
-    pBlob->zDb = db->aDb[sqlite3SchemaToIndex(db, pTab->pSchema)].zName;
+    pBlob->zDb = db->aDb[sqlite3SchemaToIndex(db, pTab->pSchema)].zDbSName;
 
     /* Now search pTab for the exact column. */
     for(iCol=0; iCol<pTab->nCol; iCol++) {
       if( sqlite3StrICmp(pTab->aCol[iCol].zName, zColumn)==0 ){
         break;

Index: src/vtab.c
==================================================================
--- src/vtab.c
+++ src/vtab.c
@@ -342,11 +342,11 @@
   ** sqlite_master table, has already been made by sqlite3StartTable().
   ** The second call, to obtain permission to create the table, is made now.
   */
   if( pTable->azModuleArg ){
     sqlite3AuthCheck(pParse, SQLITE_CREATE_VTABLE, pTable->zName, 
-            pTable->azModuleArg[0], pParse->db->aDb[iDb].zName);
+            pTable->azModuleArg[0], pParse->db->aDb[iDb].zDbSName);
   }
 #endif
 }
 
 /*
@@ -406,11 +406,11 @@
     iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
     sqlite3NestedParse(pParse,
       "UPDATE %Q.%s "
          "SET type='table', name=%Q, tbl_name=%Q, rootpage=0, sql=%Q "
        "WHERE rowid=#%d",
-      db->aDb[iDb].zName, SCHEMA_TABLE(iDb),
+      db->aDb[iDb].zDbSName, SCHEMA_TABLE(iDb),
       pTab->zName,
       pTab->zName,
       zStmt,
       pParse->regRowid
     );
@@ -516,11 +516,11 @@
   }
   pVTable->db = db;
   pVTable->pMod = pMod;
 
   iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
-  pTab->azModuleArg[1] = db->aDb[iDb].zName;
+  pTab->azModuleArg[1] = db->aDb[iDb].zDbSName;
 
   /* Invoke the virtual table constructor */
   assert( &db->pVtabCtx );
   assert( xConstruct );
   sCtx.pTab = pTab;
@@ -680,11 +680,11 @@
   int rc = SQLITE_OK;
   Table *pTab;
   Module *pMod;
   const char *zMod;
 
-  pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zName);
+  pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zDbSName);
   assert( pTab && (pTab->tabFlags & TF_Virtual)!=0 && !pTab->pVTable );
 
   /* Locate the required virtual table module */
   zMod = pTab->azModuleArg[0];
   pMod = (Module*)sqlite3HashFind(&db->aModule, zMod);
@@ -804,11 +804,11 @@
 */
 int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab){
   int rc = SQLITE_OK;
   Table *pTab;
 
-  pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zName);
+  pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zDbSName);
   if( pTab!=0 && ALWAYS(pTab->pVTable!=0) ){
     VTable *p;
     int (*xDestroy)(sqlite3_vtab *);
     for(p=pTab->pVTable; p; p=p->pNext){
       assert( p->pVtab );