commit 1d740a006648362f3aca9dd3cf89e026df64c4d9
Author: bot50 <bot@cs50.harvard.edu>
Date:   Mon May 4 08:12:56 2026 +0000

    daviddoji-cs50/problems/2024/sql/atl@20260504T081256.093729371Z

diff --git a/schema.sql b/schema.sql
new file mode 100644
index 0000000..7e3a40b
--- /dev/null
+++ b/schema.sql
@@ -0,0 +1,33 @@
+CREATE TABLE "passengers" (
+    "id" INTEGER,
+    "first_name" TEXT NOT NULL,
+    "last_name" TEXT NOT NULL,
+    "age" INTEGER NOT NULL,
+    PRIMARY KEY("id")
+);
+
+CREATE TABLE "checkins" (
+    "id" INTEGER,
+    "checkin_data" NUMERIC NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "flight" TEXT NOT NULL,
+    PRIMARY KEY("id")
+);
+
+CREATE TABLE "airlines" (
+    "id" INTEGER,
+    "name" TEXT NOT NULL,
+    "concourse" TEXT,
+    PRIMARY KEY("id")
+);
+
+CREATE TABLE "flights" (
+    "id" INTEGER,
+    "flight_number" INTEGER NOT NULL,
+    "airline" TEXT NOT NULL,
+    "departure_code" TEXT NOT NULL,
+    "arrival_code" TEXT NOT NULL,
+    "departure_date" NUMERIC NOT NULL,
+    "arrival_date" NUMERIC NOT NULL,
+    PRIMARY KEY("id"),
+    FOREIGN KEY("airline") REFERENCES "airlines"("name")
+)