diff --git a/src/bin/todo/create.rs b/src/bin/todo/create.rs
index ef85c04..4d8cc25 100644
--- a/src/bin/todo/create.rs
+++ b/src/bin/todo/create.rs
@@ -1,7 +1,7 @@
 use chrono::{Local, Weekday};
 use clap::Parser;
 use inquire::{DateSelect, Select};
-use mindmap::db::get_client;
+use mindmap::db::insert_todo;
 use mindmap::{Difficulty, Priority, Task};
 
 #[derive(Parser)]
@@ -29,14 +29,12 @@ pub async fn command(_args: &Args) {
             .expect("An error occurred!"),
     };
 
-    let client = get_client().await.expect("Failed to get client");
-    client
-        .execute(
-            "INSERT INTO todo (description, priority, difficulty, deadline) VALUES ($1, $2, $3, $4)",
-            &[&task.description, &task.priority, &task.difficulty, &task.deadline],
-        )
-        .await
-        .expect("Failed to insert task");
-
-    println!("Task \"{}\" created successfully!", task.description);
+    insert_todo(
+        task.description,
+        task.priority,
+        task.difficulty,
+        task.deadline,
+    )
+    .await
+    .expect("Failed to insert task.");
 }
diff --git a/src/bin/todo/delete.rs b/src/bin/todo/delete.rs
index b8fac1c..f3c986c 100644
--- a/src/bin/todo/delete.rs
+++ b/src/bin/todo/delete.rs
@@ -1,6 +1,6 @@
 use clap::Parser;
 use inquire::Select;
-use mindmap::db::{get_all_tasks, get_client};
+use mindmap::db::{delete_task, get_all_tasks};
 
 #[derive(Parser)]
 pub struct Args {}
@@ -16,14 +16,7 @@ pub async fn command(_args: &Args) {
     .prompt()
     .expect("An error occurred!");
 
-    let client = get_client().await.expect("Failed to fetch client");
-    client
-        .execute(
-            "DELETE FROM todo WHERE description = $1",
-            &[&task_description],
-        )
+    delete_task(task_description.to_string())
         .await
-        .expect("Failed to delete task");
-
-    println!("Task \"{}\" deleted successfully!", task_description);
+        .expect("Failed to delete task.");
 }
diff --git a/src/bin/todo/list.rs b/src/bin/todo/list.rs
index 4502300..3c6a319 100644
--- a/src/bin/todo/list.rs
+++ b/src/bin/todo/list.rs
@@ -1,20 +1,11 @@
-use chrono::Local;
 use clap::Parser;
-use mindmap::db::get_client;
+use mindmap::db::list_tasks;
 
 #[derive(Parser)]
 pub struct Args {}
 
 pub async fn command(_args: &Args) {
-    let client = get_client().await.expect("Failed to fetch client");
-    let today = Local::now().date_naive();
-    let rows = client
-        .query(
-            "SELECT description, priority, difficulty, deadline FROM todo WHERE deadline = $1::date",
-            &[&today],
-        )
-        .await
-        .expect("Failed to fetch tasks");
+    let rows = list_tasks().await.expect("Failed to list tasks.");
 
     for row in rows {
         let description: String = row.get(0);
diff --git a/src/bin/todo/update.rs b/src/bin/todo/update.rs
index ac9c9ed..20e9a6b 100644
--- a/src/bin/todo/update.rs
+++ b/src/bin/todo/update.rs
@@ -1,6 +1,6 @@
 use chrono::{Local, Weekday};
 use clap::Parser;
-use mindmap::db::{get_all_tasks, get_client};
+use mindmap::db::{get_all_tasks, update_task};
 use mindmap::{Difficulty, Priority, Task};
 
 #[derive(Parser)]
@@ -59,14 +59,13 @@ pub async fn command(_args: &Args) {
             .expect("An error occurred!"),
     };
 
-    let client = get_client().await.expect("Failed to fetch client");
-    client
-        .execute(
-            "UPDATE todo SET description = $1, priority = $2, difficulty = $3, deadline = $4 WHERE description = $5",
-            &[&new_task.description, &new_task.priority, &new_task.difficulty, &new_task.deadline, &task_description],
-        )
-        .await
-        .expect("Failed to update task");
-
-    println!("Task updated successfully!");
+    update_task(
+        new_task.description,
+        new_task.priority,
+        new_task.difficulty,
+        new_task.deadline,
+        task_description,
+    )
+    .await
+    .expect("Failed to update task.");
 }
diff --git a/src/db/mod.rs b/src/db/mod.rs
index 24d92ff..2af0eee 100644
--- a/src/db/mod.rs
+++ b/src/db/mod.rs
@@ -1,8 +1,9 @@
-use crate::Task;
+use crate::{Difficulty, Priority, Task};
+use chrono::{Local, NaiveDate};
 use dotenv::dotenv;
 use std::env;
 use tokio::sync::OnceCell;
-use tokio_postgres::{Client, Error, NoTls};
+use tokio_postgres::{Client, Error, NoTls, Row};
 
 static CLIENT: OnceCell<Client> = OnceCell::const_new();
 
@@ -48,3 +49,73 @@ pub async fn get_all_tasks() -> Result<Vec<Task>, Error> {
 
     Ok(tasks)
 }
+
+pub async fn insert_todo(
+    description: String,
+    priority: Option<Priority>,
+    difficulty: Option<Difficulty>,
+    deadline: Option<NaiveDate>,
+) -> Result<(), Error> {
+    let client = get_client().await?;
+
+    client
+        .execute(
+            "INSERT INTO todo (description, priority, difficulty, deadline) VALUES ($1, $2, $3, $4)",
+            &[&description, &priority, &difficulty, &deadline],
+        )
+        .await
+        .expect("Failed to insert task");
+
+    println!("Task \"{}\" created successfully!", description);
+
+    Ok(())
+}
+
+pub async fn delete_task(description: String) -> Result<(), Error> {
+    let client = get_client().await?;
+
+    client
+        .execute("DELETE FROM todo WHERE description = $1", &[&description])
+        .await
+        .expect("Failed to delete task");
+
+    println!("Task \"{}\" deleted successfully!", description);
+
+    Ok(())
+}
+
+pub async fn list_tasks() -> Result<Vec<Row>, Error> {
+    let client = get_client().await?;
+
+    let today = Local::now().date_naive();
+    let rows = client
+        .query(
+            "SELECT description, priority, difficulty, deadline FROM todo WHERE deadline = $1::date",
+            &[&today],
+        )
+        .await
+        .expect("Failed to fetch tasks");
+
+    Ok(rows)
+}
+
+pub async fn update_task(
+    new_description: String,
+    new_priority: Option<Priority>,
+    new_difficulty: Option<Difficulty>,
+    new_deadline: Option<NaiveDate>,
+    old_description: String,
+) -> Result<(), Error> {
+    let client = get_client().await?;
+    client
+        .execute(
+            "UPDATE todo SET description = $1, priority = $2, difficulty = $3, deadline = $4 WHERE description = $5",
+            &[&new_description, &new_priority, &new_difficulty, &new_deadline, &old_description],
+        )
+        .await
+        .expect("Failed to update task");
+
+    println!("Task updated successfully!");
+
+    Ok(())
+}