diff --git a/storage_engine/src/index.rs b/storage_engine/src/index.rs
index b7e48ab..dde57d3 100644
--- a/storage_engine/src/index.rs
+++ b/storage_engine/src/index.rs
@@ -31,38 +31,38 @@ pub struct Index<K, V> {
 pub struct IndexHeader {
 }
 
-impl <I, V>Index<I, V> {
-    pub async fn new(file_name: &str) -> Result<Index<I, V>> {
+impl <K, V>Index<K, V> {
+    pub async fn new(file_name: &str) -> Result<Index<K, V>> {
         todo!()
     }
 
-    pub async fn connect(file_name: &str) -> Result<Index<I, V>> {
+    pub async fn connect(file_name: &str) -> Result<Index<K, V>> {
         todo!()
     }
 
     // Saves the in-memory index to disk and deallocates.
-    pub async fn sleep() -> Result<Index<I, V>> {
+    pub async fn sleep() -> Result<Index<K, V>> {
         todo!()
     }
 
     // Loads the index into memory
-    pub async fn wake() -> Result<Index<I, V>> {
+    pub async fn wake() -> Result<Index<K, V>> {
         todo!()
     }
 
     pub async fn insert() -> Result<()>
-        where I: Encode, V: Encode
+        where K: Encode, V: Encode
     {
         todo!()
     }
 
-    pub async fn lookup(&mut self, k: I) -> Result<Option<V>> 
-        where I: Encode + Decode,
+    pub async fn lookup(&mut self, k: K) -> Result<Option<V>> 
+        where K: Encode + Decode,
     {
         todo!()
     }
 
-    pub async fn delete(&mut self, k: I) -> Result<Option<V>> {
+    pub async fn delete(&mut self, k: K) -> Result<Option<V>> {
         todo!()
     }
 }
diff --git a/storage_engine/src/storage_engine.rs b/storage_engine/src/storage_engine.rs
index 113982a..6075476 100644
--- a/storage_engine/src/storage_engine.rs
+++ b/storage_engine/src/storage_engine.rs
@@ -22,6 +22,8 @@ pub type FilePosition = u64;
 pub struct Store<T> {
     table_folder: String,
     file: File,
+    // primary_index: Vec<Index<T, FilePosition>>>,
+    // indexes: Vec<Option<Index<T, HashSet<FilePosition>>>>,
     header: StoreHeader,
     data_type: PhantomData<T>,
     
@@ -189,6 +191,8 @@ impl <T>Store<T> {
         };
         let encoded_header: Vec<u8> = header.encode()?;
 
+        // Index::new<T, FilePosition>(format!("rows", primary_column.to_string()))
+
         let mut store = Self {
             table_folder: table_folder.to_string(),
             file,