diff --git a/src/backend/db.py b/src/backend/db.py
index c3a339c..f112910 100644
--- a/src/backend/db.py
+++ b/src/backend/db.py
@@ -74,3 +74,31 @@ CREATE_TABLE_SUBJECTS = """CREATE TABLE subjects (
     id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
     name TEXT NOT NULL UNIQUE
 )"""
+CREATE_ELSA_PROF_TABLE = """CREATE TABLE elsa_prof (
+    id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+    fullname TEXT NOT NULL UNIQUE
+  )"""
+CREATE_ELSA_TABLE = """CREATE TABLE elsa (
+    id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+    date TEXT NOT NULL,
+    semester TEXT NOT NULL,
+    prof_id INTEGER NOT NULL,
+    FOREIGN KEY (prof_id) REFERENCES elsa_prof (id)
+  )"""
+CREATE_ELSA_FILES_TABLE = """CREATE TABLE elsa_files (
+    id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+    filename TEXT NOT NULL,
+    fileblob BLOB NOT NULL,
+    elsa_id INTEGER NOT NULL,
+    filetyp TEXT NOT NULL,
+    FOREIGN KEY (elsa_id) REFERENCES elsa (id)
+  )"""
+CREATE_ELSA_MEDIA_TABLE = """CREATE TABLE elsa_media (
+    id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+    chapter TEXT NOT NULL,
+    title TEXT NOT NULL,
+    signature TEXT NOT NULL,
+    pages TEXT NOT NULL,
+    elsa_id INTEGER NOT NULL,
+    FOREIGN KEY (elsa_id) REFERENCES elsa (id)
+  )"""