diff --git a/definitions/attribute.py b/definitions/attribute.py
index 4297075..cf16bc1 100644
--- a/definitions/attribute.py
+++ b/definitions/attribute.py
@@ -1,3 +1,5 @@
+from datetime import datetime
+
 """
 class Attribute:
     def __init__(self, display_name, html_input_type="text", required=False, unique=False, primary=False, regex=None, min=None, max=None, options=None, default_val="", auto_increment=False, index=False, comment="", compareto=None):
@@ -18,28 +20,90 @@ class Attribute:
         ##default_val: Optional[str, int, float] = None,  # HTML form input "value" attribute. Sets default value.
 """
 
+# Base Attribute class
 class Attribute:
     def __init__(self,
-            display_name: str,                              # Input label or table column header.
-            html_input_type: str = "text",                  # HTML form input type. Determines MySQL data type.
-            placeholder: str = "text",                      # HTML form input placeholder.
-            required: bool = False,                         # HTML form input "required" attribute and MySQL "Not Null" constraint
-            unique: bool = False,                           # MySQL "unique" constraint
-            primary: bool = False,                          # MySQL "primary key" constraint
-            index: bool = False,                            # bool: MySQL index
-            compareto: Optional[List[str]] = None,          # Compare to another attribute of the item for validation: ["comparison", "referenceattrib"]
-            title: str =""                                  # Description text, html "title" attribute
-        ):
+        display_name: str,                              # Input label or table column header.
+        html_input_type: str = "text",                  # HTML form input type. Determines MySQL data type.
+        placeholder: str = "",                          # HTML form input placeholder.
+        required: bool = False,                         # HTML form input "required" attribute and MySQL "Not Null" constraint
+        unique: bool = False,                           # MySQL "unique" constraint
+        primary: bool = False,                          # MySQL "primary key" constraint
+        index: bool = False,                            # bool: MySQL index
+        compareto: Optional[List[str]] = None,          # Compare to another attribute of the item for validation: ["comparison", "referenceattrib"]
+        title: str =""                                  # Description text, html "title" attribute
+    ):
         self.display_name = display_name
-        if not display_name:
-            return f"Missing display name for attribute '{attrib_name}'."
         self.html_input_type = html_input_type
-        if not html_input_type:
-            return f"Missing input type for attribute '{attrib_name}'."
         self.required = required
         self.unique = unique
         self.primary = primary
         self.default_val = default_val
         self.index = index
         self.compareto = compareto
-        self.title = title
\ No newline at end of file
+        self.title = title
+
+class textAttribute:
+    def __init__(self,
+        regex: str = None,                              # Regex for value validation
+        default_val: str = "",                          # Default value
+        compareto: Optional[List[Tuple[str, str]]] = None,
+    ):
+        self.html_input_type = "text"
+        self.regex = regex
+        self.default_val = default_val
+
+class intAttribute:
+    def __init__(self,
+        min_val: int = None,                            # Min value
+        max_val: int = None,                            # Max value
+        step_val: int = None,                           # Increment step
+        default_val: int = None,                        # Default value
+        auto_increment: bool = False,                   # bool: MySQL autoincrement
+        compareto: Optional[List[Tuple[str, str]]] = None,
+    ):
+        self.html_input_type = "number"
+        self.min_val = min_val
+        self.max_val = max_val
+        self.step_val = step_val
+        self.default_val = default_val
+        self.auto_increment = auto_increment
+
+class floatAttribute:
+    def __init__(self,
+        min_val: float = None,                          # Min value
+        max_val: float = None,                          # Max value
+        step_val: float = None,                         # Increment step
+        default_val: float = None,                      # Default value
+        auto_increment: bool = False,                   # bool: MySQL autoincrement
+        compareto: Optional[List[Tuple[str, str]]] = None,
+    ):
+        self.html_input_type = "number"
+        self.min_val = min_val
+        self.max_val = max_val
+        self.step_val = step_val
+        self.default_val = default_val
+        self.auto_increment = auto_increment
+
+class dateAttribute:
+    def __init__(self,
+        min_val = None,                                 # Min value
+        max_val = None,                                 # Max value
+        default_val = None,                             # Default value
+        compareto: Optional[List[Tuple[str, str]]] = None,
+    ):
+        self.html_input_type = "date"
+        self.min_val = datetime.strptime(min_val, "%Y-%m-%d")
+        self.max_val = datetime.strptime(max_val, "%Y-%m-%d")
+        self.default_val = datetime.strptime(default_val, "%Y-%m-%d")
+        
+class selectAttribute:
+    def __init__(self,
+        options: Optional[List[str]] = None,                                 # List of options
+        default_val: str = None,                             # Default value
+    ):
+        self.html_input_type = "select"
+        self.options = options
+        self.default_val = default_val if default_val else self.options[0]
+
+        
\ No newline at end of file