diff --git a/inc/entry.h b/inc/entry.h
new file mode 100644
index 0000000..e8b1896
--- /dev/null
+++ b/inc/entry.h
@@ -0,0 +1,37 @@
+#pragma once
+#include <any>
+using u_int8_t = unsigned char;
+
+using u_int16_t = unsigned short;
+
+using u_int32_t = unsigned int;
+
+enum class Cell_Type
+{
+    CELL_TYPE_NULL = 0,
+    CELL_TYPE_CHAR = 1,
+    CELL_TYPE_NUMB2BYTES = 2,
+    CELL_TYPE_NUMB4BYTES = 3,
+    CELL_TYPE_NUMB8BYTES = 4,
+    CELL_TYPE_STRING = 5
+};
+
+
+class cell_base{
+
+    Cell_Type type;
+
+    u_int16_t len;
+
+    public:
+
+    virtual inline void set_type(Cell_Type type){
+        this->type = type;
+    }
+
+    virtual inline void set_len(u_int16_t len){
+        this->len = len;
+    }
+
+
+};
\ No newline at end of file