diff --git a/DEV_README.md b/DEV_README.md
index 3b842cf..2745084 100644
--- a/DEV_README.md
+++ b/DEV_README.md
@@ -17,7 +17,6 @@ Follow the CodeIgniter [Style Guide](https://github.com/timw4mail/CodeIgniter/bl
 
 ## Database reference material
 ### Firebird
-
 * [Interbase 6 Lang Ref](http://fbclient.googlecode.com/files/LangRef.pdf) - SQL Syntax (pdf)
 * [Firebird Lang Update Ref](http://www.firebirdsql.org/file/documentation/reference_manuals/reference_material/html/langrefupd25.html) - SQL Syntax Updates
 
@@ -30,6 +29,5 @@ Follow the CodeIgniter [Style Guide](https://github.com/timw4mail/CodeIgniter/bl
 * [Performance Tips](http://www.postgresql.org/docs/9.0/interactive/performance-tips.html)
 
 ### SQLite
-
 * [SQL Syntax](http://www.sqlite.org/lang.html)
 * [Pragma SQL Syntax](http://www.sqlite.org/pragma.html) - Internal / Performance Stuff
\ No newline at end of file
diff --git a/src/databases/firebird.php b/src/databases/firebird.php
index ed7d01f..1adaab8 100644
--- a/src/databases/firebird.php
+++ b/src/databases/firebird.php
@@ -136,9 +136,12 @@ class firebird {
 	 */
 	function get_tables()
 	{	
-		$sql='SELECT "RDB$RELATION_NAME" FROM "RDB$RELATIONS" 
-			WHERE "RDB$RELATION_NAME" NOT LIKE \'RDB$%\'
-			AND "RDB$RELATION_NAME" NOT LIKE \'MON$%\'';
+		$sql = <<<SQL
+			SELECT "RDB$RELATION_NAME" FROM "RDB$RELATIONS" 
+			WHERE "RDB$RELATION_NAME" NOT LIKE 'RDB$%'
+			AND "RDB$RELATION_NAME" NOT LIKE 'MON$%'
+SQL;
+
 		$this->statement = $this->query($sql);
 		
 		$tables = array();
@@ -158,9 +161,11 @@ class firebird {
 	 */
 	function get_system_tables()
 	{
-		$sql='SELECT "RDB$RELATION_NAME" FROM "RDB$RELATIONS"
-			WHERE "RDB$RELATION_NAME" LIKE \'RDB$%\'
-			OR "RDB$RELATION_NAME" LIKE \'MON$%\'';
+		$sql = <<<SQL
+			SELECT "RDB$RELATION_NAME" FROM "RDB$RELATIONS"
+			WHERE "RDB$RELATION_NAME" LIKE 'RDB$%'
+			OR "RDB$RELATION_NAME" LIKE 'MON$%';
+SQL;
 
 		$this->statement = $this->query($sql);
 
diff --git a/src/databases/pgsql.php b/src/databases/pgsql.php
index 09db3f7..bbf40ba 100644
--- a/src/databases/pgsql.php
+++ b/src/databases/pgsql.php
@@ -74,9 +74,11 @@ SQL;
 	 */
 	function get_tables()
 	{
-		$sql = 'SELECT "tablename" FROM "pg_tables" 
-			WHERE "tablename" NOT LIKE pg\_%
-			AND "tablename" NOT LIKE sql\%';
+		$sql = <<<SQL
+			SELECT "tablename" FROM "pg_tables" 
+			WHERE "tablename" NOT LIKE 'pg\_%'
+			AND "tablename" NOT LIKE 'sql\%'
+SQL;
 
 		$res = $this->query($sql);
 
@@ -92,9 +94,11 @@ SQL;
 	 */
 	function get_system_tables()
 	{
-		$sql = 'SELECT "tablename" FROM "pg_tables"
-			WHERE "tablename" LIKE \'pg\_%\'
-			OR "tablename" LIKE \'sql\%\'';
+		$sql = <<<SQL
+		 	SELECT "tablename" FROM "pg_tables"
+			WHERE "tablename" LIKE 'pg\_%'
+			OR "tablename" LIKE 'sql\%'
+SQL;
 		
 		$res = $this->query($sql);
 
@@ -140,8 +144,10 @@ SQL;
 	 */
 	function get_views()
 	{
-		$sql = 'SELECT "viewname" FROM "pg_views" 
-			WHERE viewname NOT LIKE pg\_%';
+		$sql = <<<SQL
+		 	SELECT "viewname" FROM "pg_views" 
+			WHERE "viewname" NOT LIKE 'pg\_%';
+SQL;
 
 		$res = $this->query($sql);