pamhyr: Rename '_sql_*' function to '_db_*'.

src/Model/Friction/Friction.py

@@ -35,7 +35,7 @@ class Friction(SQLSubModel):
         self._end_strickler = None
 
     @classmethod
-    def _sql_create(cls, execute):
+    def _db_create(cls, execute):
         execute("""
           CREATE TABLE friction(
             id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
@@ -54,11 +54,11 @@ class Friction(SQLSubModel):
         return True
 
     @classmethod
-    def _sql_update(cls, execute, version):
+    def _db_update(cls, execute, version):
         return True
 
     @classmethod
-    def _sql_load(cls, execute, data=None):
+    def _db_load(cls, execute, data=None):
         new = []
         reach = data["parent"]  # Reach object
         status = data["status"]
@@ -88,7 +88,7 @@ class Friction(SQLSubModel):
 
             yield ind, sec
 
-    def _sql_save(self, execute, data=None):
+    def _db_save(self, execute, data=None):
         ind = data["ind"]
         execute(
             "INSERT INTO " +